Radial tire chatter

[Floyd Staggs]

Originally Posted by Todd Geisler

That's the same size tire I run. I've run the BFG's, M/T's, now the Hoosiers. All have worked with 18 psi cold, as high as 19.5 psi hot. Typical usable range for me is 16 to 18 psi. I can't remember ever going to 15 psi.

I run 120 #/in rate coil springs out back (stock type coils) and double adjustable shocks. You need the firmness to come from the shock valving (control), not so much the springs themselves.

My car has 60's a best of 1.289 footbraking, mid 9 second naturally aspirated 454 bbc, th400, 6000 flash 8" converter, th400, 4.33 gear.

Hot & greasy tracks are a big challenge for the radial tires. For this reason, I now have a second set of rims with a pair of 10.5 x 28 Hoosier stiff sidewall slicks for when conditions are at their worst.

hth
Todd

Todd,
My truck is a '68 GMC shortbed 1/2 ton that weighs 4000 lbs. It has a pump gas 540, turbo 400, ford 9", ladder bars , alston shocks in the rear, Q1's in the front.. It runs high 10's but I'd like to get it down to DGas times. In perfect weather it has gone 10:70 with the radials. I'm going to miss the Heritage race this weekend cause I didn't have any time to service it or change tires. But, in 2 weeks we have another Heritage race in Vegas and I just have to figure out if I need to change tires or suspension setup.
By the way, those are impressive times from your ride.