Quote:
Originally Posted by crah
I just towed for the first time with the new E-Rated Nitto Terra Grapplers. Previous towing has been with the Michelin stock P rated tires. I have air bags also at 20 pounds.
55 psi in the rear, 45 psi in the front. Trailer listed dry weight is approx. 7500 pounds and I add about 1000 pounds at the max to the trailer, and no water in the holding tanks. Hitch weight is listed at 1,540 and only my wife and I in the truck with 3 little dogs at 15 pounds each.
The truck definitely handles the bumps much better over bridges. Side to side movement seems to be an issue, and the combined package seems to be more sensitive to the crosswinds compared to the P rated tires. I like the feeling of the P-rated tires better besides the bumps.
Do you think I have too much air in the tires? Will a sway bar help drastically? I don't want to lower the air pressure too much with the weight I'm pulling, and I know other guys are pulling with more air than me. Maybe 40 in the front and 45 in the rear. Let me know what you think.
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You're running pretty close to what i'm running while towing. I run 60 rear and 45-50 front with my E rated goodyear's. With my C rated cooper mudders, i run 50 all around, and i prefer the feel of the E rated tires while towing. Much more stable and secure than the mudders.
I would try running 55 all around while towing to see if that helps. I haven't heard too many good things about the grapplers, so i can't comment on their towing performance.
I would try that, and if that don't work i'd probably consider taking them back and swapping for a different brand.
No, i don't think you have too much air in them while towing. But i do think you do when empty. I run 40 front/32 rear empty, and it handles just fine.
The only thing i can think of that would be the difference is the fact you no longer have a pooch in the tire when loaded. Therefore, the new tires have less rolling resistance and the side to side motion you're feeling is your steering. Especially over bumps; if you're holding the steering wheel with your arm rested on the armrests it will cause you to steer slightly back and forth. The steering on these trucks is very sensitive this way. I particularly feel this motion more so when towing tandom though.
So, i don't know if that helped or not but..............this has been my experience.