GRAND AM Rolex D.P. and GT Recommended Wheel Rim widths

Slick

Tire Size
Inflation Pressure [PSI]
Max
inflated
diameter
[mm]
Inflated circumference [mm]
Section width
[mm]
Tread width
[mm]
DP sizes
325/650-18
28.5
651.6
2047.0618
330.3
304
325/705-18
28.5
707.2
 2221.7343
356.5
304
GT sizes
285/645-18
35.5
649.7
 2041.0927
296
255
305/660-18
35.5
670
 2104.8671
311.8
283
305/675-18
35.5
678.6
 2131.8848
318.9
295
305/685-18
35.5
688.5
 2162.9865
319.2
295
 



Rain

PIRELLI

Size

Tread

Rim

Max inflated diameter

Section width

Rim

Section width

Rim

Section width

Recommended

Other dimension

Other dimension

325/650-18

Rain

12Jx18

652

339

11.5Jx18

333
-

-

325/705-18

Rain

13Jx18

709

348

12.5Jx18

342
-

 -

245/645-18

Rain

9.5Jx18

648

264

 

 
-

-

285/645-18

Rain

10.5Jx18

648

292

11Jx18

298
-

-

305/660-18

Rain

11.5Jx18

664

317

12Jx18

323
-

-

305/675-18

Rain

11.5Jx18

680

317

12Jx18

323

 -

-

305/690-18

Rain

12Jx18

695

323

11.5Jx18

317

12.5Jx18

330




Last Revised: 09-03-2009