Whats the biggest drag radial I can fit

[SEP455]

Whats the biggest drag radial I can fit on an '86 Regal with 15x7 T-type rims without running a spacer?

 

[HOT ROD-GN]

Whats the biggest drag radial I can fit on an '86 Regal with 15x7 T-type rims without running a spacer?

275

 

[SEP455]

I'm currently running a 255 drag radial, would changing to a 275 give me any advantage in the 1/4?

 

[HOT ROD-GN]

I'm currently running a 255 drag radial, would changing to a 275 give me any advantage in the 1/4?

depend on your combo?

 

[TurboJoe5.3]

naturally more tire = better traction. start experimenting with the tire Pressure and find your sweet spot and depending on temperature you should see a diff. I have a Ws6 that i went from 315s to 335s and the difference was amazing