I'm on Tire Rack and need to make a choice to help a friend.
What's the *practical* difference of 10mm wider tread?

1. This SUV is a dozen years old & has never been off road
2. This SUV is used like a car & never carries a heavy load
3. What matters to the owner is economy & safety

From the standpoint of economy (e.g., miles per tire), I don't
know if a 10mm wider tire will last longer or shorter. Do you?

From safety, I "guess" that 10mm more of tread width is safer,
but the driver is a little old lady (literally) in a no-snow
state, so, traction isn't really a problem.

Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

What difference (practically) does 10mm make?

On Sunday, June 19, 2016 at 6:44:33 PM UTC-5, Henning Schröder wrote:
I'm on Tire Rack and need to make a choice to help a friend.
What's the *practical* difference of 10mm wider tread?

1. This SUV is a dozen years old & has never been off road
2. This SUV is used like a car & never carries a heavy load
3. What matters to the owner is economy & safety

From the standpoint of economy (e.g., miles per tire), I don't
know if a 10mm wider tire will last longer or shorter. Do you?

From safety, I "guess" that 10mm more of tread width is safer,
but the driver is a little old lady (literally) in a no-snow
state, so, traction isn't really a problem.

Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

What difference (practically) does 10mm make?

This is your 1st post...are you a nymshifter?

bob_villain auf Sun, 19 Jun 2016 16:52:17 -0700 geschrieben ...

This is your 1st post...are you a nymshifter?

I have plenty of posts, just not to this newsgroup because
I don't ask questions about buying parts.

I'm all over the mobile device newsgroups, for example.
And, even if I were a "nym shifter", the question is a
perfectly valid question.

Do you have a problem with the question?

Or are you just a paranoid Internet Nazi with hugely misplaced
Draconian ideas that have no absolutely basis in reality?

Henning Schröder wrote:
I'm on Tire Rack and need to make a choice to help a friend.
What's the *practical* difference of 10mm wider tread?

1. This SUV is a dozen years old & has never been off road
2. This SUV is used like a car & never carries a heavy load
3. What matters to the owner is economy & safety

From the standpoint of economy (e.g., miles per tire), I don't
know if a 10mm wider tire will last longer or shorter. Do you?

From safety, I "guess" that 10mm more of tread width is safer,
but the driver is a little old lady (literally) in a no-snow
state, so, traction isn't really a problem.

Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

What difference (practically) does 10mm make?

225 & 235 are section widths, not tread width.
Try to keep the tread width about the same as the wheel width.
Measure the wheel bead to bead width then look up tables that list
acceptable section widths for that wheel.
Or, ask the tire place.

Wouldn't changing require different wheels? Why not go with the size you
already have?

Henning Schröder wrote:
I'm on Tire Rack and need to make a choice to help a friend.
What's the *practical* difference of 10mm wider tread?

1. This SUV is a dozen years old & has never been off road
2. This SUV is used like a car & never carries a heavy load
3. What matters to the owner is economy & safety

From the standpoint of economy (e.g., miles per tire), I don't
know if a 10mm wider tire will last longer or shorter. Do you?

From safety, I "guess" that 10mm more of tread width is safer,
but the driver is a little old lady (literally) in a no-snow
state, so, traction isn't really a problem.

Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

What difference (practically) does 10mm make?

For this use, None. The only thing that would be different is that the
235 tire is about 1/2 inch in diameter larger. The speedometer will read
slower than actual speed.

Specification Sidewall Radius Diameter Circumference Difference

225/75-15 6.6in 14.1in 28.3in 88.9in 0%

235/75-15 6.9in 14.4in 28.9in 90.7in 2.1%


--
Steve W.

Chet Kincaid wrote in news:WIydnc9K27flqPrKnZ2dnUU7-
:

Wouldn't changing require different wheels? Why not go with the size you
already have?

That's not enough of a difference in width to require different wheels.

On Sun, 19 Jun 2016 23:44:30 -0000 (UTC), Henning Schröder
wrote:

I'm on Tire Rack and need to make a choice to help a friend.
What's the *practical* difference of 10mm wider tread?

1. This SUV is a dozen years old & has never been off road
2. This SUV is used like a car & never carries a heavy load
3. What matters to the owner is economy & safety

From the standpoint of economy (e.g., miles per tire), I don't
know if a 10mm wider tire will last longer or shorter. Do you?

From safety, I "guess" that 10mm more of tread width is safer,
but the driver is a little old lady (literally) in a no-snow
state, so, traction isn't really a problem.

Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

What difference (practically) does 10mm make?
7.5 mm difference in hight (rolling diameter). It will make the
speedo read just a tiny bit low. The difference in treadlife
(increase) and traction (increase) will be so small as to be virtually
undetectible by the driver.

On Sun, 19 Jun 2016 19:14:48 -0500, Chet Kincaid
wrote:

Wouldn't changing require different wheels? Why not go with the size you
already have?
unless there is a clearance problem, a 235 will fit the same wheel as
the 225. Only 10mm width difference, and 7.5mm diameter - or3.75mm
standing height. I have 235 winter tires and 225 summer tires on my
pickup

On Sunday, June 19, 2016 at 7:44:33 PM UTC-4, Henning Schröder wrote:
I'm on Tire Rack and need to make a choice to help a friend.
What's the *practical* difference of 10mm wider tread?

1. This SUV is a dozen years old & has never been off road
2. This SUV is used like a car & never carries a heavy load
3. What matters to the owner is economy & safety

From the standpoint of economy (e.g., miles per tire), I don't
know if a 10mm wider tire will last longer or shorter. Do you?

From safety, I "guess" that 10mm more of tread width is safer,
but the driver is a little old lady (literally) in a no-snow
state, so, traction isn't really a problem.

Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

What difference (practically) does 10mm make?

Not much. With that small difference they will fit. In terms of
how long they last, won't make any difference. I recall doing some
calcs back in college that showed about one molecule worth of rubber
comes off each revolution. Certainly that small difference isn't
going to affect how many miles they last. If snow is a consideration,
wider is usually worse for traction, because the tire can't dig
throw the snow to the pavement as easily. Wider is also more susceptible
to hydroplaning. But on dry pavement, wider has more traction.

On 06/19/2016 06:08 PM, Henning Schröder wrote:
bob_villain auf Sun, 19 Jun 2016 16:52:17 -0700 geschrieben ...

This is your 1st post...are you a nymshifter?

I have plenty of posts, just not to this newsgroup because
I don't ask questions about buying parts.

I'm all over the mobile device newsgroups, for example.
And, even if I were a "nym shifter", the question is a
perfectly valid question.

Do you have a problem with the question?

Or are you just a paranoid Internet Nazi with hugely misplaced
Draconian ideas that have no absolutely basis in reality?


Right in one. Meet the resident Arschloch.

On 06/19/2016 06:14 PM, Chet Kincaid wrote:
Wouldn't changing require different wheels?

No.

Why not go with the size you already have?

Some sizes are more readily available or cheaper.

On 06/19/2016 05:44 PM, Henning Schröder wrote:
Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

Which is cheapest or is available in the brand/style you want? Like
others have said there isn't enough difference to matter.

On Sun, 19 Jun 2016 23:44:30 -0000 (UTC), Henning Schröder wrote:

I'm on Tire Rack and need to make a choice to help a friend.
What's the *practical* difference of 10mm wider tread?

1. This SUV is a dozen years old & has never been off road
2. This SUV is used like a car & never carries a heavy load
3. What matters to the owner is economy & safety

From the standpoint of economy (e.g., miles per tire), I don't
know if a 10mm wider tire will last longer or shorter. Do you?

From safety, I "guess" that 10mm more of tread width is safer,
but the driver is a little old lady (literally) in a no-snow
state, so, traction isn't really a problem.

Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

What difference (practically) does 10mm make?

You say you are on Tire Rack -- Call them, their people are there for questions just like yours.

Chet Kincaid auf Sun, 19 Jun 2016 19:14:48 -0500 geschrieben ...

Wouldn't changing require different wheels?

It's only a few millimeters.
The wheels are the same for both widths.

On 6/19/2016 5:08 PM, Henning Schröder wrote:
bob_villain auf Sun, 19 Jun 2016 16:52:17 -0700 geschrieben ...

This is your 1st post...are you a nymshifter?

I have plenty of posts, just not to this newsgroup because
I don't ask questions about buying parts.

I'm all over the mobile device newsgroups, for example.
And, even if I were a "nym shifter", the question is a
perfectly valid question.

Do you have a problem with the question?

Or are you just a paranoid Internet Nazi with hugely misplaced
Draconian ideas that have no absolutely basis in reality?


This question is just too close to being on-topic. Definitely
suspicious. Such things mark you as an abnormal user of this group.

Steve W. auf Sun, 19 Jun 2016 20:44:05 -0400 geschrieben ...

For this use, None. The only thing that would be different is that the
235 tire is about 1/2 inch in diameter larger. The speedometer will read
slower than actual speed.

Specification Sidewall Radius Diameter Circumference Difference

225/75-15 6.6in 14.1in 28.3in 88.9in 0%

235/75-15 6.9in 14.4in 28.9in 90.7in 2.1%

Are you sure about the half inch diameter difference?
Someone else calculated 7.5mm diameter - or3.75mm in ride height.

There are 25.4 mm in an inch, so half an inch would be more than a
dozen millimeters, which isn't what the other guy said on diameter.

clare auf Sun, 19 Jun 2016 21:15:26 -0400 geschrieben ...

7.5 mm difference in hight (rolling diameter). It will make the
speedo read just a tiny bit low. The difference in treadlife
(increase) and traction (increase) will be so small as to be virtually
undetectible by the driver.

Someone calculated the ride height to be half that 7.5mm, which is
even a smaller difference.

The spare is the larger size, so, I guess the only difference might
be when the spare is put on.

Would the extra 10mm width (and about 3.75mm in height) matter when
the spare is being used?

On Mon, 20 Jun 2016 02:33:36 -0000 (UTC), Henning Schröder
wrote:

Steve W. auf Sun, 19 Jun 2016 20:44:05 -0400 geschrieben ...

For this use, None. The only thing that would be different is that the
235 tire is about 1/2 inch in diameter larger. The speedometer will read
slower than actual speed.

Specification Sidewall Radius Diameter Circumference Difference

225/75-15 6.6in 14.1in 28.3in 88.9in 0%

235/75-15 6.9in 14.4in 28.9in 90.7in 2.1%

Are you sure about the half inch diameter difference?
Someone else calculated 7.5mm diameter - or3.75mm in ride height.

There are 25.4 mm in an inch, so half an inch would be more than a
dozen millimeters, which isn't what the other guy said on diameter.
a basic understanding of tire numbering
The 225 or 235 is the tire section width in mm. the 75 (or 70, or
60, or 55) is the aspect ratio - the decimal fraction of the section
width that represents the tire hieght.

I DID make an error - the sidewall hight changes by 7.5 mm - so the
diameter changes by 15mm - pretty close to 0 .6 inch.

My bad.

On Mon, 20 Jun 2016 02:37:52 -0000 (UTC), Henning Schröder
wrote:

clare auf Sun, 19 Jun 2016 21:15:26 -0400 geschrieben ...

7.5 mm difference in hight (rolling diameter). It will make the
speedo read just a tiny bit low. The difference in treadlife
(increase) and traction (increase) will be so small as to be virtually
undetectible by the driver.

Someone calculated the ride height to be half that 7.5mm, which is
even a smaller difference.

The spare is the larger size, so, I guess the only difference might
be when the spare is put on.

Would the extra 10mm width (and about 3.75mm in height) matter when
the spare is being used?
Only with posi on clean dry pavement. - possibly. - with the spare
on the drive axle.

clare auf Sun, 19 Jun 2016 22:56:46 -0400 geschrieben ...

The 225 or 235 is the tire section width in mm.

How it tire section different than tread width?
Someone said they're different.
I never used the term "tire section", but, I always thought the
225 or 235 was the width of the tire on the road, which, to me,
is the tread width.

Is there a difference between tread width and tire section?

I DID make an error - the sidewall hight changes by 7.5 mm - so the
diameter changes by 15mm - pretty close to 0 .6 inch.

Thanks for confirming the strange math where the height of the tire is
listed as an inch percentage of the mm "tire section" width.

So the ride height is a bit more than half an inch difference.
That's small (unless the spare is being used, where the spare is the
larger width).

On 06/19/2016 09:08 PM, Henning Schröder wrote:
So the ride height is a bit more than half an inch difference.
That's small (unless the spare is being used, where the spare is the
larger width).


Not noticeable. It's a long story but I run 14" studded tires in the
winter, 15" street tires in the summer. The ride height is different and
the speedometer is off by about 10% but there are no other problems. I
use the GPS speed rather than the speedometer and that is correct.

On 6/19/2016 8:53 PM, rbowman wrote:
On 06/19/2016 06:14 PM, Chet Kincaid wrote:
Wouldn't changing require different wheels?

No.

Why not go with the size you already have?

Some sizes are more readily available or cheaper.


Isn't anyone going to ask?

Does SIZE really matter?

--
Maggie

Henning Schröder wrote:
clare auf Sun, 19 Jun 2016 22:56:46 -0400 geschrieben ...

The 225 or 235 is the tire section width in mm.

How it tire section different than tread width?

Google. Internet.
http://www.tirerack.com/tires/tirete...jsp?techid=200

Henning Schröder wrote in news:nk7klt$7n4$1
@news.mixmin.net:

Steve W. auf Sun, 19 Jun 2016 20:44:05 -0400 geschrieben ...

For this use, None. The only thing that would be different is that the
235 tire is about 1/2 inch in diameter larger. The speedometer will read
slower than actual speed.

Specification Sidewall Radius Diameter Circumference Difference

225/75-15 6.6in 14.1in 28.3in 88.9in 0%

235/75-15 6.9in 14.4in 28.9in 90.7in 2.1%

Are you sure about the half inch diameter difference?
Someone else calculated 7.5mm diameter - or3.75mm in ride height.

That's incorrect. It should be 7.5mm radius = 15mm diameter = 47mm circumference

47mm = 1.85 inches.

There are 25.4 mm in an inch, so half an inch would be more than a
dozen millimeters, which isn't what the other guy said on diameter.

The other guy is wrong. It should be radius, not diameter.

Henning Schröder wrote:
clare auf Sun, 19 Jun 2016 22:56:46 -0400 geschrieben ...

The 225 or 235 is the tire section width in mm.

How it tire section different than tread width?
Someone said they're different.
I never used the term "tire section", but, I always thought the
225 or 235 was the width of the tire on the road, which, to me,
is the tread width.

Is there a difference between tread width and tire section?

Yes. The section width is measured from sidewall to sidewall. Depending
on design and application the tread with itself will be different.



I DID make an error - the sidewall hight changes by 7.5 mm - so the
diameter changes by 15mm - pretty close to 0 .6 inch.

Thanks for confirming the strange math where the height of the tire is
listed as an inch percentage of the mm "tire section" width.

So the ride height is a bit more than half an inch difference.
That's small (unless the spare is being used, where the spare is the
larger width).



--
Steve W.

On 6/19/16 7:44 PM, Henning Schröder wrote:
I'm on Tire Rack and need to make a choice to help a friend.
What's the *practical* difference of 10mm wider tread?

1. This SUV is a dozen years old & has never been off road
2. This SUV is used like a car & never carries a heavy load
3. What matters to the owner is economy & safety

From the standpoint of economy (e.g., miles per tire), I don't
know if a 10mm wider tire will last longer or shorter. Do you?

From safety, I "guess" that 10mm more of tread width is safer,
but the driver is a little old lady (literally) in a no-snow
state, so, traction isn't really a problem.

Any idea what's best?

Stock OEM is 225x75R15
Current tires are 235x75R15 but I'm replacing all four.

What difference (practically) does 10mm make?


Use the manufacturer-recommended OEM size. Check the door sticker,
owner's manual, or call the car dealer.

The vehicle is 12 yeas old, plus you didn't say if the LOL was the
original owner. So the current tires are unlikely the original ones and
may not be the OEM size

--
With all this €œgun control€� talk, I havent heard one politician say how
they plan to take guns away from criminals and terrorists€” just from law
abiding citizens€¦

On Sun, 19 Jun 2016 23:44:13 -0500, Muggles wrote:

On 6/19/2016 8:53 PM, rbowman wrote:
On 06/19/2016 06:14 PM, Chet Kincaid wrote:
Wouldn't changing require different wheels?

No.

Why not go with the size you already have?

Some sizes are more readily available or cheaper.


Isn't anyone going to ask?

Does SIZE really matter?

We are talking tires, right?

On Mon, 20 Jun 2016 00:08:14 -0000 (UTC), Henning Schröder
wrote:

bob_villain auf Sun, 19 Jun 2016 16:52:17 -0700 geschrieben ...

This is your 1st post...are you a nymshifter?

I have plenty of posts, just not to this newsgroup because
I don't ask questions about buying parts.

I'm all over the mobile device newsgroups, for example.
And, even if I were a "nym shifter", the question is a
perfectly valid question.

Do you have a problem with the question?

Or are you just a paranoid Internet Nazi with hugely misplaced

It seems in especially poor taste, to say the least, for a German to
be trivializing the word "Nazi". A nazi is not a butt-inski who
wastes people's time worrying about posters' background. A nazi is a
murderer of civilians, Jews, Gypsies, the mentally ill and the
physically and mentally handicapped, priests and ministers,
homosexuals, and political opponents.

Have you forgotten already what your parents', grandparents', or
ggrandparents' generation did? Perhaps those closely related to you.
Do you think using the word in a trivial manner will make others
forget? Or did the other germans fail to teach you? Have they
forgotten or started making excuses?

Draconian ideas that have no absolutely basis in reality?

posted for all of us...



It seems in especially poor taste, to say the least, for a German to
be trivializing the word "Nazi". A nazi is not a butt-inski who
wastes people's time worrying about posters' background. A nazi is a
murderer of civilians, Jews, Gypsies, the mentally ill and the
physically and mentally handicapped, priests and ministers,
homosexuals, and political opponents.


Sort of like a radical Islamic jihad type?

--
Tekkie

On Mon, 20 Jun 2016 03:08:38 -0000 (UTC), Henning Schröder
wrote:

clare auf Sun, 19 Jun 2016 22:56:46 -0400 geschrieben ...

The 225 or 235 is the tire section width in mm.

How it tire section different than tread width?
Someone said they're different.
I never used the term "tire section", but, I always thought the
225 or 235 was the width of the tire on the road, which, to me,
is the tread width.

Is there a difference between tread width and tire section?

The tire section width is OFTEN the same as the tread width, but not
necessarily. Some tires have narrower tread than section width

A tire's section width (also called "cross section width") is the
measurement of the tire's width from its inner sidewall to its outer
sidewall (excluding any protective ribs, decorations or raised
letters) at the widest point. This measurement is made without any
load placed upon the tire and after the tire has been properly mounted
on its industry assigned measuring rim and has been inflated and reset
to its test pressure after 24 hours.

Because a tire's section width is influenced by the width of the rim
upon which the tire is mounted, the correct industry assigned
measuring rim width for the tire size being measured must be used.

The width of a tire mounted on a narrow rim would be "narrower" than
if the same tire was mounted on a wide rim.


I DID make an error - the sidewall hight changes by 7.5 mm - so the
diameter changes by 15mm - pretty close to 0 .6 inch.

Thanks for confirming the strange math where the height of the tire is
listed as an inch percentage of the mm "tire section" width.

So the ride height is a bit more than half an inch difference.
That's small (unless the spare is being used, where the spare is the
larger width).

On Sun, 19 Jun 2016 22:41:00 -0600, rbowman
wrote:

On 06/19/2016 09:08 PM, Henning Schröder wrote:
So the ride height is a bit more than half an inch difference.
That's small (unless the spare is being used, where the spare is the
larger width).


Not noticeable. It's a long story but I run 14" studded tires in the
winter, 15" street tires in the summer. The ride height is different and
the speedometer is off by about 10% but there are no other problems. I
use the GPS speed rather than the speedometer and that is correct.

My truck came with 14 inch rims - I ran 15 inch snows for a few years
-with 16 inch summers (on mags) Then I put oversized brakes on and the
15 inch snows didn't fit any more - so new 16 inch rims and snows. I
had to replace the speedo gear in the trans - otherwise no problems.