When I had my 33x12.50x15's Nitto terra grapplers mounted on 15x10 wheels. I was told to run the air pressure at 25 to 30 psi. I'm curious what air pressure others are using and the results.
Thanks Guys

 

street use or offroad? street, my 33x12.5 Mud Terrians at 35psi, thats the only way ive found to have them roll right on the street.

 

Ditto... the added diameter and tread width just make them really sloppy on pavement if they are run below about 32 psi in my expereince... and thats with BFG A/T's that supposedly have a heavier sidewall than most of their competition.

 

Thanks guys, I've been running 30psi. on the street. It just doesn't have the stable feel I had with the 32's and 40psi. but I didn't want to over inflate and cause a problem. I'm going to pump them up to 35psi tomorrow and drop down if needed.
Thanks,
Kenny

 

Kenny... Your old 32's are still running great on my truck at 40 psi.

 

I pumped the 33's up to 35psi today. I like the the way it handles at 35psi. I hope it helps my gas mileage, we went to Bush Gardens last Wednesday I got 13.7 on the Interstate with 4 people and 70-75 mph. I'm going to put a new set of Autolites in tomorrow. Hopefully I can get my mileage up a little, next Friday it's off to the Shelby convention.
Thanks again for the responses.
Kenny

 

Kenny... Don't forget to let me know when your bringing the Shelby up to Genros, I'd really like to check it out. I'm still working on putting together that list of old Mustang parts I have.

 

I'll sure let you know when I take the Shelby to Genros.

 

I usually run 35psi on my 33x12.5r15 BFGATs. I bumped them up to 38psi just to see if there was a difference. Sidewall says 35, so thats what im going to keep them at after this experiment.

 

how are you liking thos grapplers? been offroad with them yet?

 

94 XLT this is a little off the trhead but still Ford...Do you mean this Shelby? http://www.carrollshelby.com/
I have not seen him in 25yrs. How is he?

 

I have no complaints about my Grapplers, haven't been off road still haven't put the 4:10's in the front yet.
Yep I mean Carroll Shelby, I haven't seen him since the convention at Lowes motor speedway. He's old but he's still getting around and making a lot of money. The picture below is my GT500KR at the Ford truck plant in Norfolk VA.

 

Wow, nice car, i wish i could afford one of those