tires

[manifest]

Looking at rear tires for our Modified Sports class car and just wondering what some of you high hp guys are running for rear tires?  We already have a 28" GY Frontrunner on the rear for Bonneville use (may end up getting the actual LSR tire) but for Wilmington we will need a drag radial i'm sure.  Looking at the GY and M/T 275/60R15 but just wanted to get opinions before I order anything for our 8" wheels.

Zach

[geezer1]

Looking at rear tires for our Modified Sports class car and just wondering what some of you high hp guys are running for rear tires?  We already have a 28" GY Frontrunner on the rear for Bonneville use (may end up getting the actual LSR tire) but for Wilmington we will need a drag radial i'm sure.  Looking at the GY and M/T 275/60R15 but just wanted to get opinions before I order anything for our 8" wheels.

Zach

We have been really happy with the M/T radials.

Geo Turner
Geezer Racing

[CTRon]

the mickey thompson drag radials are amazing.. i think they might even hook in the rain.... lol but seriously once we put them on the #1946 roadster there was no more tire spin with over 900 hp

[manifest]

Have either of you ever had any problems with them slipping on the rim or doing anything funny on the top end due to the way they grow at speed?  I remember seeing some of the NHRA Hemi SuperStock cars running radials years ago and they all got a weird woblle at the top end.  Does anyone run wheel screws or beadlocks?

Zach

[Underdog]

We haven't had any problems except on the wheel dino. No slippage in the rim. No locks,been 210mph

[greenjunk]

Me too, just don't run no pressure, thats when you'll have problems.  Think street use type pressures.  your results may vary though.

[gray63]

We ran Goodyear Taledega race tires at Maxton in the fall and will be running them again
this year in Ohio. I bought them at Penske Racing in Reading Pa.   BGMS class
Dave
#3611

[javajoe79]

 Just beware with the drag radials if you are going really fast. Some of the real high power cars running 220mph plus in the mile have had tire failures due to their growth and the time they spend at speeds like that in the mile.

[Cajun Kid]

Just beware with the drag radials if you are going really fast. Some of the real high power cars running 220mph plus in the mile have had tire failures due to their growth and the time they spend at speeds like that in the mile.

Do you know which drag radials and what starting tire pressures ?

Charles

[t russell]

we run 28 psi-35.Goodyears and M&H. went to good years to get taller tire.

[javajoe79]

I don't know the pressures but I believe they were Mickey's. The Hinson Corvette crashed because they grew enough to touch the car and come apart. The LMR Camaro I believe had a tire debead. Both were well north of 220mph or so. I also heard that M/T told them not to run them at those speeds for that amount of distance. 1/4 mile is ok but not the mile.

[sean]

If the drag radial tire slips on the rim, drag racers have been using Permatex High-tack to glue the tire to the rim. Screws are not recommended by MT, IIRC. I slip them about 1/2" per pass drag racing with no high tack.

[javajoe79]

It's not so much that they slip on the rim but the centrifugal forces cause them to grow alot and could potentially make the bead separate from the wheel.

[redcatch]

I talked to a Goodyear Rep. at PRI last month and he explained that Drag radials were just what I should run. Hard launches are not a common place thing in LSR stuff. I have about 8 complete sets of Good year and M/T tires that we used in open road racing. I have not felt comfortable using these in a mile event. In my opinion they are good tires but really need a lot of heat in them. They are really good in corners
but I think in a stright line  traction is a problem. It would also require more camber that I would feel right running. I think I will stick with the drag radials. I question them growing . Radials by their nature are much more stable and with steel belts not as prone to grow as a bias ply. Has any one noticed "C" shaped tires at the traps? Getting this old farts Camaro to not spin in first is a on going problem and resulted in short shifting and even leaving in 2nt all last year. Even when Pete reported no wheel spin, the pictures taken from the truck showed different. We were running about 27 PSI cold. We had moved the instant center alot for the last meet. That seem to help. Comments?

[javajoe79]

Our instant center is way out front of the truck and it nearly dead hooks leaving the pushtruck at Maxton but we have a real tall 1st gear and weigh near 4000lbs in mile trim. We have been running the M/Ts with no issues but from my understanding they are not recommended for much time over 200mph or so.

I also just came across this on the M/T site..

TIRE USE ON A DYNO
 Mickey Thompson tires which have been subject to use on a Dyno must no longer be used for subsequent, normal service. Use of Mickey Thompson tires on a Dyno will invalidate the tire warranty.
At no time should the following Mickey Thompson tires be used on a Dyno:
   ET Drag
    ET Motorcycle
    Pro Drag Radials
    ET Street
    ET Street Radial
    ET Street Radial II
This is Mickey Thompson DRAG / STREET Technical Bulletin #18.
For more information regarding Mickey Thompson Performance Products ph: 330.928.9092

 We try not to use any sticky tire on our dyno because they get chewed up and suck up alot of HP but until now I did not know that it voids the warranty.