Slick size differences?

[art leong]

How much difference is okay as far as circumference of a slick. I just measured mine and they are 1/2 to 3/4 inch different in circumference (mounted on the wheel same air pressure).
Is this to much or is it acceptable?

[Jeff Lee]

Call the manufacturer to confirm but they should be within 1/4" of each other. The closer the better but I think you are definitely on the outside the tolerance of acceptability. You can try and increase the short one with a lot of air for an extended period of time.

[Myron Piatek]

Originally Posted by Jeff Lee

You can try and increase the short one with a lot of air for an extended period of time.

I also heard that keeping the aired-up short one in the sun and flipping it like a burger a few times will help also!

[cad]

I had a pair that were 3/4" different. The steering pulled to one side or the other depending on the side the odd one was on. Hoosier recommended stretching. Issue fixed as soon as the new set went on.

[chris ok]

I had the same problem w my goodyears 3/4inch. tried stretching, nfg.
I set tires by measuring around them and not tire pressure as I was tought by a drag racer friend who always measures to get tires equal over making equal pressure.
I have to set one at 11, one at 14.5. I hope to afford a real pair this year.
I know its tough to find your tire size, good luck.
car looked good at 4 wide, sorry I did not get to introduce myself as I was helping a friend and his son in SuperStock.
Chris

[buzzinhalfdozen]

Art, though I've never done it or heard of a drag racer doing it my nephews who circle jerk race do it all the time. They will overinflate a tire, leave it in the sun for a bit all the while checking it's circumference, when it's close they'll let the excess pressure out and remeasure. It takes a while but seems to work for them. WARNING! this is a procedure that people who go round in circles perform use at your own risk! Joe

[michael mercer]

Originally Posted by art leong

How much difference is okay as far as circumference of a slick. I just measured mine and they are 1/2 to 3/4 inch different in circumference (mounted on the wheel same air pressure).
Is this to much or is it acceptable?

Art, are those the tires i shipped out. Thats a lota difference on a 20" tire.
You running a diff or a spool?

[art leong]

Originally Posted by michael mercer

Art, are those the tires i shipped out. Thats a lota difference on a 20" tire.
You running a diff or a spool?

Hi Mike (thanks again). I'm running a spool. I haven't put those tires on the rims yet. But wear hole wise they have more rubber than any of my other 20" M/T's .Saturday I tested a pair of tires with plugs in them (and they held air after the run), and a set of 22" M/T tires.
The tires that are different circumference are the new 8 x 20 x 13" tires that are made for asphalt racing.
I'm going to try the inflate and leave in the sun method starting tomorrow. Because the tires are for oval track racing they purposely gave me different sizes. If I can't fix them myself I'll see if they can send me another pair that match.
Going down the track the car was pulling hard to the right. I thought it was torque steer made worse by the wheels sticking out 3" more than the others. Due to the wrong backspacing.