The above size charts is the standard sizing convention for passenger car and light truck tires. It is in metric units, and represents the same sizing scheme as truck tires, but in metric form (millimeters).
In a p-metric tire sizing scheme, take the first number, multiply by the second number, divide by 1270 (which is a combination of the 25.4 mm to inches metric conversion, the 2x multiplier for the two sidewalls, and percentage conversion) and add the third number.
E.G. 245/75R17 would be 245*75/1270+17=31.46" total height.
255/70R17 would be 255*70/1270+17 = 31.05" total height.
Your 33" tire would be most closely the 285/70R17 listed above, which requires body modifications and 4+ inches of lift.
285*70/1270+17=32.71" total height.
2007 Red Rock Crystal Pearl Overland
- 2" Daystar lift - 245/75/17 Revo 2s - 1.5" Spidertrax Spacers -
Last edited by Schlotzky; 03-21-2015 at 07:30 PM.