RamAir02

iTrader: (1)

Car is a 2010 Camaro SS. Stock tire size is 275/40R20 DIAMETER: 28.7

I just picked up a pair of black 18x9.5 C6 Z06 rims for track duty. Now I need to figure out what drag radials I'm going with. I've narrowed it down to a few options (which obviously result in different diameters) and don't know which I should go with. I know there is some sort of calculator to see what my final drive ratio is with the tires, but I haven't seen it in a while.

Here's my options:

BFGoodrich g-Force T/A Drag Radial
-275/35R18 DIAMETER: 25.6
-295/35R18 DIAMETER: 26.2
-315/30R18 DIAMETER: 25.6

M&H Racemaster Drag Radials
-275/45R18 DIAMETER: 28.0
-325/40R18 DIAMETER: 28.0

Mickey Thompson ET Street Radial II
-265/40R18 DIAMETER: 26.5
-305/35R18 DIAMETER: 26.4
-305/45R18 DIAMETER: 28.8

Any help is much appreciated. Thanks!

RamAir02

iTrader: (1)

I found that Nitto makes a 305/40R18 size in their NT555R Drag Radial. DIAMETER:27.72

That may be a good choice too. I just don't know what's best for drag racing or why, and how to calculate it.

kmracer

iTrader: (1)

whats the gearing in the stock camaro? definitly go with the M/Ts. tire height will depend on gearing. m6 or auto?

RamAir02

iTrader: (1)

The stock gearing is 3.45. The car is an M6.

millersta

iTrader: (2)

if you go with a smaller tire you will accelerate faster. but i would deffinately go with some sort of m/t

kmracer

iTrader: (1)

i'd go with an m/t, the 305/35.

6SSPEED

The 305/35 would be a great choice but what about the 9.5 inch rim width? It may cause the tire to bulge.