30x10.5 radials on Stock suspension F-body?

[CJ Perry]

Tried to do a search on here but couldn't come up with anything. I currently run 30x9 radials on a 10" rim. Car 60's like a machine and is very deadly. I'm wanting to see if a 10.5 radial will even fit under my car.

Rear suspension is a Ford 9" that's stock length under my 96 Trans AM. The 9" tire fits with plenty of room, I just don't know how much bigger the 10.5 will be. Anyone have any advice? I'm sure my car will work with the 9" tire, I was just keeping an open mind.

Thanks

[Lee Valentine]

Put 10.5 X 30 radials on my 97 Firebird when I put a super stock engine in, didn't really see any improvement in 60 ft. times. the fit with no issues.

[CJ Perry]

Originally Posted by Lee Valentine

Put 10.5 X 30 radials on my 97 Firebird when I put a super stock engine in, didn't really see any improvement in 60 ft. times. the fit with no issues.

Thanks for the heads up. I'm not looking for an improvement in my 60ft, just mainly a "piece of mind" thing. With the new combo in the works, the car will be making ok power, more than my current setup, as well as a good bit more TQ.

Thanks again

[Mark Howes]

I run the 10.5s on my SS car. To get the most out of them you should put them on a 12" rim which may not work for you. It is the same concept as running the 9s on the 10" rim. Best way to get all the tire.

[CJ Perry]

Originally Posted by Mark Howes

I run the 10.5s on my SS car. To get the most out of them you should put them on a 12" rim which may not work for you. It is the same concept as running the 9s on the 10" rim. Best way to get all the tire.

I run my 9's on a 10" rim with really good luck. My current combo will 60 1.30 on kill on small tires. I'm sure it will hook with the 9's, I was just wanting a little more bite.

[Mark Howes]

CJ. It's only what I seen with mine but I noticed a big difference in how the tire "wore" going from 10s to 12s. I run between 17 and 20 psi. With the 10s about an inch of tire on both sides was not getting "wear". Once I went to 12" rims even wear/stickiness post run right across the tire all the way to the sidewall.
Looking back I don't think I was using anymore tire on the track with the 10.5 tires then the 9" tires when mounted on 10" rims
That's on a SS/JA car that 60s in the low 1.30s. Your results may vary of course.

Good luck!

[CJ Perry]

Thanks! I agree the 9" radial on a 10" rim is probably the same footprint as a 10.5 on a 10" rim.

I'm going to use my 9in tires until there worn out.

[countrypuppy4865]

I am considering going yo 10.5 as well. However, I have been 9.70s in my firebird with 1.24 60 ft with 9" tires. I think they can easily handle 9.50s or faster. I run 22 lbs of air.

[Jim Hanig]

Originally Posted by countrypuppy4865

I am considering going yo 10.5 as well. However, I have been 9.70s in my firebird with 1.24 60 ft with 9" tires. I think they can easily handle 9.50s or faster. I run 22 lbs of air.

C pup I ran both a couple of wks ago and the 9s where 3hun faster with the same 60 ft

[CJ Perry]

Originally Posted by countrypuppy4865

I am considering going yo 10.5 as well. However, I have been 9.70s in my firebird with 1.24 60 ft with 9" tires. I think they can easily handle 9.50s or faster. I run 22 lbs of air.

Hahaha seems you got a little more motor than I do.

When I first started running radials, I fought traction until I learned how they work and what they like. I've never fought traction issues after I got it dialed in.

I'm sure I will have some data in the near future.