need traction!!!!!

[eric schildroth]

Looking at getting a set of convo pro's and 11.5 x 28 x 15 et streets. What size rim and what backspacing should I get? I have already rolled my fender lips and have air bags.I did a search and everybody seems to have there own ideas....... If anyone is running this settup please let me know. Thanx all.

 

[TurboTR]

The 28x11.5 QT Pros on an 8" rim w 3.5" bs work ~ perfect on mine. That's about the biggest section width tire I could put on it w/o rubbing on either side, and the rim centers it about perfect in there IMO. I think the ET Streets may have a bit wider section width. IME the QT Pros seem to work better anyway.

TurboTR

 

[UNGN]

8" wide with 3.5" backspacing should work fine with rolled fender lips. 3.75" would be about perfect, though.

 

[eric schildroth]

ttt

 

[Russ Merritt]

I did 28x12.5x15 ETs on draglights 8" rim 3.5 BS. Fits mint!

 

[eric schildroth]

ttt

 

[1320]

If your 11.40 's or slower with the 3.42 gear still....go with a 26 tire........

 

[eric schildroth]

Nope it went 11.00 with my old motor and am building a bigger better motor now.

 

[UNGN]

Originally posted by 1320
If your 11.40 's or slower with the 3.42 gear still....go with a 26 tire........

I picked up at 12.0's with a 28" tire. The crossover point appears to be about 110 to 112 mph in the 1/4. If you run faster than this with a 26" tire, you will run as fast, if not faster with a 28" tire. Atleast that is from the data I've collected with a stock longblock, stock converter car. I would think a loose converter would need taller tires even sooner than this.

Russ sent me pictures of his set up a while back. He is right, it looks great. The wider 12.5 X 28 ET's fit pretty darn good with a 8" wheel with 3.5" BS. 11.5 ET's should fit as good.

 

[Russ Merritt]

I can't wait to try the 28" tires! I have always used 26" slicks, but the car runs out of motor with 200, 300 feet to go, "hold on baby we're almost there". I wish I tried them sooner, before I built the new motor. I'm not going to use the ET streets though, I'm going to get real slicks, 28x10.5 M/T