Yes if you need the growth it is not there. I went from a 28x10.5 stiff slick to a 28x10.5 PBR. My car picked up Everywhere but MPH because I am out of gear.

How fast do they wear on the street. I drive my car alot and I kind of get tired of changing tires at the track. I'm thinking about buying a new pair and just leaving them on the car all summer.

Yeah I knew the radial would not grow at speed. But I do need a min of 28" if I'm going to do any 1/4 mile passes. Most will be 1/8 but I would like to see if I've been able to tune it anenough to get a high 10 sec time slip out of this tank.

Called Mickey Thompson and they said it should measure 88" in circumference when mounted on my 8" rim. Was told the radials do not vary like the bias ply. If not it is defective and I could return them. I'm going to follow up w/Summit and see if everyone is on the same page. Me

I got about 4500 miles and a probably ~100 dragstrip passes on my previous set. I'm a little easier on this set and don't beat on them as much....except for the other night...when I had to punish the motorcycle for thinking he had something for me...

4500 miles and 100 passes out of the 275 Pro's

I was wondering if they would last 450 miles and 10 passes

I drive my car a lot, but not THAT much. I'd be thrilled with that kind of wear. My car hooks great with the Pro, I'm wondering if it would be ok with the regular Street SS(or the ET street R) drag radial that has a lot more tread. It's just a mid 10 second footbrake car but I go to some test-n-tunes where they don't prep much.

Cudatom check you PM's, thanks!

Just to clarify, do you have the M/T ET Street Radial Pro or the M/T ET Drag Pro Drag Radials that you drove for 4500 miles on the street? They make the Street Radial Pro in a 275 designation but not the Pro Drag Radial.

I was lucky to get 1500 miles and maybe a 100-200 or so passes on my regular ET Street Radials. I always left them on my car year round except for when I did drag week, I would change to a radial TA for the road sections just to save tire wear and to be able to run 65mph in the rain if needed.

That's closer to what I figured they'd be good for. It's probably best for me to buy a new pair every spring(or every 2 years). Expensive but it would eliminate Changing tires at the track.
I thought a spool and alot of street driving would kill a soft set of drag radials. And I'll be bumbed if the Street S/S doesn't hook as good as the Pro.

Ok so today I had my 1st outing with the Mickey Pro Bracket Radials. Have mixed reviews so far but only 4 passes.

Temp was 88, it was hot, did I say it was hot. Lol
DA was 3700' and 55% humidity. No wind.

1st pass car was slow a 1/10th off from similar conditions. Ran 7.21 w/only a 1.585 for the 60'. Checked tires and the drivers moved 2" and pass about 1/2".

2nd pass lowered pressure from 18 to 17lbs. The car did not like it. Slowed to 7.22 and 60' went further away to 1.598. Left tire spun 2" on rim again. The right moved maybe 3/8".

3rd run pressure back to 18lbs. Car ran 7.17 , the 60' was back to 1.585. Again the left tire spun on the rim 2". The right did not move.

My 4th pass the left tire finally seated and only moved 1/2". The sixty 1.579 and ran a 7.12.

With bias ply slicks I'm usually 1.55 for the 60' in similar conditions and run 7.08- 7.10.

So my question to those that run the PBR's is do they get better with more passes. Other than the 1st pass my burnouts were very short. Mickey tech told me to do it this way. And also is it normal for them to take several passes to seat. They were hi tack'd. I plan on continuing to play with tire pressure and shock settings but need to get to a TT day instead of normal race day.

some will seat straight off others
I have found a few runs then they will settle and be more consistant
Foot or transbrake ?
I had to go up 2 lbs or so psi when I went to tbrake . Consensus go up till they spin . Shock setting way more important than with rags , track prep less than ET street radials
I am looking at tightening extension and maybe going a little higher psi
Fairly solid burnout for me , short will often me turn tyre , mate does even bigger burnout


Tex

I know it's said that screws are not needed but why not just screws the ties to the rims?

I foot brake. Ran 18 psi on bias ply and had best and consistent 60'. Would go 1.53 on cooler days. The track had good prep today. The car is heavy at 4k and then some.

I will say the car does run straighter and less sway down track w/radials.

Not sure why screws can't be ran but Mickey Thompson says not to run them. Maybe someone that knows more can answer that.

Because of tyre design at the bead , no way Jose'
I know my mate 4000lb chev has run as high as 22psi with t brake
I use the 28x10.5 he runs the 29.5x10.5
I borrowed his and ran 18.5
I use a 10" rim ge uses a 8

Tex

being it is a heavy car you might go up on pressure. Wade Metzinger a member here spoke with MT at a recent divisional race. They had him increase his tire pressure, he was up as high as 20psi with his 68 Barracuda with no problems. It was 60 footing in the mid to high 1.4s IIRC. He also runs the 28x10.5 PBR

I have run mine at 17 and 18 PSI and my last outing there is a good shot where I have a lot of sidewall wrinkle so I am going to go up a little bit next time out and see what I have.

Thanks for the reply that was good info to know. I will increase the psi 1lb at a time and see what the wagon likes.

As heavy as that ride is, I'd start at 20 and go up from there until the 60s dropped off. I wouldn't be surprised if the "sweet spot" is around 22. Pressures that work with bias-ply slicks don't mean much when you're using radials.

I have found that different tire gauges on the same tires one after another will not read EXACTLY the same pressure, especially low pressure tire gauges
My message is use your tire gauge only on your tires and don't EVER loan it out
I have had three low pressure analog tire gauges that I loaned out at the races come back reading 3 to 8 lbs. instead of zero because some rooky who drove his car to the track and didn't have his own tire gauge ruin mine

Agreed Cab. I use the same gauge every time. And ifI do loan it its in staging w/me right there.

Good point Brad. I will try 20 and go from there the next time I go out.