What Tire to run
 

What tire would you run on a Modified Type car running 5.80 at 3000lbs. Its a small block automatic.

Herb Jr

Re: What Tire to run
 

Probably a M/T 14-32 stiff sidewall.

Re: What Tire to run
 

Herb I agree with Dave on this My car is 2960# and with a " normal" tire without the stiff side wall it wants to run over the tire unless we ran the pressure way up 11-12 psi. Next year I will be trying Radials for the first time however when I get new bias plys they will be with the stiff sidewall. For reference 9.75 et @ 2970lbs. 7500 rpm chip 8100 rpm stall converter. Hope this helps Joe Buchanan SS/AX SS/BX 3117

Re: What Tire to run
 

Ray, My new car is an auto. trans. Joe Buchanan

Re: What Tire to run
 

347 in motor, 5.67 gear, 8800 rpm....3 speed, oh yea its a dodge. It ran 5.90's. its a legal bore and stroke 340 for ihra production ss but will run c/m or bs. on nhra side. car is 3100lbs now in ihra trim.

Herb Jr

Re: What Tire to run
 

Ray, shift 9300-9400 no air shifter yet cross finish line 9700-9800 falls back to converter obviously on shift. Only have maybe 8 runs on car mainly trying to get an idea of what converter I'll need as well as trans ratio, first gear is 2.45 I believe haven't had chance to try other trans yet. To be honest this auto trans took me e few runs to get used to shifting it, stick seemed easier, I actually used to shift my 5- speed set up at 9700-9800 however had more drop between gears. Not sure if I need to run engine higher between shifts or not as I don't really have a lot of info yet on this set up. Thanks Joe Sorry Ray just looked at my data logger shift rpm is correct but finish line is 9350 seems to be still pulling strong, 6.50 gear 101 roll tire, believe I need to go with less roll tire. Joe

Re: What Tire to run
 

Ray off topic do you run an even or odd fire engine? I have the stuff to do an even fire but man looking at the even fire crank scares me. Joe