# Difference between P225x75R15 and P235x75R15 on SUV

That's incorrect. It should be 7.5mm radius = 15mm diameter = 47mm circumference
47mm = 1.85 inches.

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

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

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

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

Only with posi on clean dry pavement. - possibly. - with the spare on the drive axle.
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On Sunday, June 19, 2016 at 7:44:33 PM UTC-4, Henning Schröder wrote:

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.
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On 06/19/2016 05:44 PM, Henning Schröder wrote:

Which is cheapest or is available in the brand/style you want? Like others have said there isn't enough difference to matter.
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You say you are on Tire Rack -- Call them, their people are there for questions just like yours.
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On 6/19/16 7:44 PM, Henning Schröder wrote:

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 “gun control” talk, I haven’t heard one politician say how
they plan to take guns away from criminals and terrorists— just from law
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