Fender clearance?

[Alan Roehrich]

Before you move the axle, you better check your wheelbase. There are specs and limits on wheelbase, and they do measure it.

[Run to Rund]

I saw some rubbing with 1.25" clearance for Hoosier 30x9 bias, 116 mph, 8" wheels. I hear the tires don't grow as much with 10" wheels.

[cad]

We're researching the same to determine if we can run a 30x9.

Steve at Hoosier tire:
The radial does not grow. It is easier to spin if the track is not good.
The Bias tire will grow about 3" in circumference, or about 1" in diameter, on the 8" or 10" wheel at 120MPH. You will get more runs from the bias tire.

They recommend the same burn out for both tires. The 10" wheel will give a slightly flatter footprint meaning a little more rubber on the ground, not a big difference.

[Ed Wright]

Cad, that info agrees exactly with my experience.

[tom51]

68 camaro..trimmed quarter panel in front for more clearance. you may need to cut the rear too. i also made steel wedge plates and moved my rear back about 1/4 inch or less..no more rubbing now. or you can make a few runs and watch the smoke fly at the end of the track. tires get smaller with each rub..

[Ian Hill]

Not a nova, but on my chevelle i have about a 1/4" of clearance on the front side. i run the 92" roll out 30X9 radials. I can also run 27 pounds of air in them if the track is there, to a .92 under. I currently run 22 pounds of pressure for testing during regular bracket racing days at my track. These are on a 8" rim, running 5.13 gears and 2.75 first gear. I wish they made them in a 30 x 7 radial, i'd probabley mph like crazy! (i/cm).