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rjt86 · 04-16-2008, 04:46 AM

trying to make sense of this, im not a expert but according to the tyre calculators.
the stock tyre been a 245/40/18 compared to the 275/30/19 is actually bigger in diameter and circumference.....

Differences between Wheel/Tyre 1(245/40/18) & 2 (275/30/19)
Rolling Radius -2.8mm
Circumference -17.59mm
Diameter -5.6mm

275 comes out smaller overal in the above 3 areas, thats what is confusing me....anything im missing?

04-16-2008, 04:46 AM	#13 (permalink)
rjt86 Forum Member Join Date: Nov 2007 Location: Melbourne, Australia Drives: 99 3rd gen GTO Trader Rating: (0)	Re: 275/30 R19 all around? trying to make sense of this, im not a expert but according to the tyre calculators. the stock tyre been a 245/40/18 compared to the 275/30/19 is actually bigger in diameter and circumference..... Differences between Wheel/Tyre 1(245/40/18) & 2 (275/30/19) Rolling Radius -2.8mm Circumference -17.59mm Diameter -5.6mm 275 comes out smaller overal in the above 3 areas, thats what is confusing me....anything im missing?