been out checking around might go big 35 tires , rock stars. how are these trucks with big ones ?

 

unless you have the V8, find a different wheel. the XD series wheels are very heavy. I just sold a set, and went back to stock wheels with the 35s. The difference in performance is huge. I can actually use my cruise control without running 4k rpms.

 

I can't believe it when I hear you guys running those huge tires. I have 265s which are too small but they are new so I'll wait a bit before getting the 285s. But the lack of power seems too big of an issue to run the 305-315s.

 

Aerodynamics and gearing conspire against a good time on the hwy with 35's, but on the trail you don't notice any power loss. It just depends on what you put your priorities on.

 

Exactly, I have the I5 but offroad at 5-10 mph rockcrawling, I'm glad that I have 35's.
I also made sure that I got one of the lightest 35" tires made - Goodyear Duratrac 315/75/16 and stuck with the stock 16" aluminum wheels. I have NO issues on the highway.

Oh, and Rockstars, yawwnnn. 9 out of 10 trucks around me have them. Boring. Be original go with something else.

 

I don't care what you drive, you'll notice a fairly large decrease in power.
I've gone from 265/70r17s to 35x12.50x18s and the wheel & tire combo created a huge power drop & this was with nearly 400hp. The i5 would hate you.

I have a V8 H3 & only 265s. It's really fast. I'd never put larger wheels on it, though. Larger tires is a another story.

Bunger, yeah, your tires are 64 lb each.
I have the KO2s on my H2 (17" wheel) & they are 66lb for the 35". 37" is only 71.
The KO2 in 315/75r16 is 68 lb, so you're doing well.


For anyone interesting, if I am correct, I recall wheel weight is 4x greater than that of tire weight due to wheel weight being unsprung. So if you go up say 4 lb on your wheel, in this example, say the KMC Rockstars, that's like adding 16 lb to each tire.

 

Tire weight is considered unsprung weight also. Whats important is the combined weight of wheel/tire. For the sake of example....If you got a wheel that was 5# heavier, and a tire that was 5# lighter and the same diameter, you wouldnt notice any difference since your total unsprung weight would remain the same.

 

Unsprung weight would remain the same, but rotational mass would increase causing an increase in the amount of force required to accelerate and decelerate the wheel and tire. All things being equal, save weight at the extremes.

 

I also have 35s on stock wheels with the I5 and while there is a drop in performance on the highway it's not anything major. It still feels more powerful than our Nitro RT v6 on 31" mud tires, two inches taller than stock. Having such high gears in the hummer keeps it from being that noticeable and unless you're one that floors it from every stop our lives in a very hilly area you'll be ok.

If you want to talk about loss of power my jeep tj 4 liter felt that way when I had it on 35's before regearing it. The most horrible I had was a jeep yj 4 cylinder on 33's and a 4 speed. That thing had no power.

 

Exactly why I don't pay to take the turnpike, 75-80 is outside my comfort zone on 35's unless I don't care about the gas guzzling.