Tire size dilemma [Archive] - GrandAmGT.com Forum


View Full Version : Tire size dilemma

09-30-2004, 08:10 PM
My 2002 SE came with two brand new tires (P215/60R15) on it when I bought it this summer.

I would like to change to P205/65R15 size when replacing. This is the stock size for the 2004 model year and I know I'll have no problems if I replace all 4 tires.

But with two new ones on, I don't want to buy 4 new ones.

Can I mix P205/65R15 on the front and the P215/60R15 on the rear without causing the ABS system to think somethings wrong???

There are only 11 revolutions per mile difference between the two sizes.

09-30-2004, 09:12 PM
no.. the sensor will pick up the diff and throw the "check tire press" light on for sure if the tires are diff sizes. it did that 2 mine when I put 2 winter tires on for a week or so last fall.

10-01-2004, 06:34 AM
What were the sizes you had on the car though? With the two sizes I've listed, there is a very small difference. In fact, if I had two brand new P215/60R15 on the front and two P215/60R15 worn to the wear out indicators on back then there would be more difference in the size if I'm doing the math correctly.

10-01-2004, 07:45 AM
I had 225/50/16's and 225/60/15's (I think).. it was a very small diff too.. still set off the sensor.

10-01-2004, 09:16 AM
u have nothing to worry about 99 was the only year they had those stupid tire pressure indicators, since they were pretty lame they got rid of them 2000 on...so go ahead, won't notice a difference. I drove with one 15 inch rim and tire before and rest were 17s cuz i had a flat in the 17 and took it off for repair, and drove for a few days like that without a single problem

plus some people on here like to put bigger rims on the back then on the front...to give off a muscle car look..they don't have any problems either

10-01-2004, 09:31 AM
I had 225/50/16's and 225/60/15's (I think).. it was a very small diff too.. still set off the sensor.

I can see why it set the sensor off. That is actually quite a big difference in size in your tires. My tires size was within 1.3% of each other. Your 60 series tire is over 6% larger than the 50 series.