teddyca

iTrader: (37)

I just ordered a set of 20" Crays and have two choices on tires. Which would fit a 10.5 rim better? I had 285's on my last set of 19X11's but the tire was stretched. If I go with the 285 on a 10.5 will the fit ment be much better or is the .5 to small of a difference? Thanks for the help

285/30/20
305/25/20

teddyca

iTrader: (37)

And after putting in my initial stock tire size and comparing it to the 2, it looks like the 285 is by far the perfect match. I want to keep the speedo and my abs in mind.

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
275/40-18 4.3in 13.3in 26.7in 83.8in 756 0.0%
285/30-20 3.4in 13.4in 26.7in 84.0in 754 0.3%
305/25-20 3.0in 13.0in 26.0in 81.7in 776 -2.5%

madeouttaglass

iTrader: (1)

The 285s look like a good match to your stock size rears. That's only OK if your front choice also matches your stock size fronts. I'm no expert, but I've always heard the guys on CF say .5" to 1" difference is what your AH wants to see. That said, ANY size that has that difference should be OK.
I hope I said that in understandable terms.

teddyca

iTrader: (37)

Tom I understand completely. At first I did not take any of this into consideration but after your email I did. The stock size as you know is 245*45*17. I am going after a set of 255*35*19's. Heres a comparo to stock

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
245/45-17 4.3in 12.8in 25.7in 80.7in 785 0.0%
255/35-19 3.5in 13.0in 26.0in 81.8in 775 1.3%

madeouttaglass

iTrader: (1)

Sounds like you've got it figured out. I also wanted to go with 305s in the rear, but with what Isaac has available, I would have had to buy rubberbands for the front elsewhere.
Now, as for that $10 saved, are you going to buy me a beer at Alices in January?