Comments on: Wider tires on an SUV http://www.i-save-u-gas.com/suvs/wider-tires-on-an-suv/ Helping you save money at the gas pump Thu, 18 Aug 2011 13:49:52 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: terrellfastball http://www.i-save-u-gas.com/suvs/wider-tires-on-an-suv/comment-page-1/#comment-65 terrellfastball Tue, 11 Aug 2009 10:36:46 +0000 http://www.i-save-u-gas.com/?p=205#comment-65 A little more traction is the benefit, gas mileage shouldn't be effected unless the change was ridiculous. Whether the computer is thrown off and by how far is dependant on the tires. For instance, the change between 255/75r and 275/70r is only 1.25 mm of tire radius height. This is computed by multiplying the two numbers together, and understanding the second is a ratio of the first. A 255/75 tire is 255 mm wide at tread and the height to the wheel is 75% of that, or 191.25 mm. Always keep in mind that the wheel width needs to be acceptable for the tire width, you can't put a 275 tire on a 5 inch wide wheel. See a competant dealer for questions. A little more traction is the benefit, gas mileage shouldn’t be effected unless the change was ridiculous.

Whether the computer is thrown off and by how far is dependant on the tires. For instance, the change between 255/75r and 275/70r is only 1.25 mm of tire radius height. This is computed by multiplying the two numbers together, and understanding the second is a ratio of the first. A 255/75 tire is 255 mm wide at tread and the height to the wheel is 75% of that, or 191.25 mm.

Always keep in mind that the wheel width needs to be acceptable for the tire width, you can’t put a 275 tire on a 5 inch wide wheel. See a competant dealer for questions.

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