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Tire Sizes to fit 20's
Rochester,
There are a number of wheels that will fit the AWD. AWDriver is correct. In my investigation there are a number of companies that make for the AWD. There are a number of threads on that topic.
On the sizing I just returned from a Big O Store who is owned by a friend and we came up with a sizing chart. It may be helpful to others as well.
Tire Comparisons
................................STOCK
width...........................225.........255... ......245..........255
Aspect Ratio...................60..........50...........4 5............45
Rim Size.........................18..........20....... ....20............20
Sidewall Height..............5.31.........5.02........4.34. .......4.52
Section Width................8.86.......10.04........9.65. ......10.04
Overall Diameter...........28.64......30.04......28.68.......29.04
Circumference..............39.94........94.37..... .90.10.......91.22
Revs per Mile..............726.51.......692.41....725.24... ...716.25
Speedometer
at 65............................65..........68.20... ...65.11........65.93
The overall diameter is the one we need to watch because of clearance with the arm and the nut. In this scenario it looks like the 255/50/20 is going to be to large. The 255/45/20 should still give enough clearance. The 245/45/20 looks to be the closest to current. But make sure you do your checking with the experts as well. There are other sizes that will work but I found this information to be helpful for my understanding.
DP
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