Guys who went to 35's . . .

Originally Posted by JWSchmidt3

You would be incorrect. Just got back the H3 over the weekend, and it now drives great.

I'll do another post about it when I get a chance.

Good to hear it's downshifting less, which means the acceleration is that much slower than stock as engine lugs in higher gears.

[marin8703]

question for you smart people. I am in the final stage of getting 35s but have one final question. I noticed most of you that have 35s have the adventure package which has the 4:1 transfer case. I dont have that, i have the basic.

I dont know what the gearing is in the base transfer case or how it would effect anything so this is my question. Would I, with the regular transfer case, notice any difference in perforemance (decrease due to the larger tires) more than you guys have or just the same?

Thanks,
Marin

[JWSchmidt3]

Originally Posted by marin8703

this is my question. Would I, with the regular transfer case, notice any difference in perforemance (decrease due to the larger tires) more than you guys have or just the same?

Thanks,
Marin

Probably the same, but you're starting with less (in gearing) to begin with. IMHO

[marin8703]

so what does that really mean, that i am starting with less gearing? In the t-case are the hi and low gears different from the base to the adventure or only the low? Thanks!

[Sewie]

Originally Posted by marin8703

so what does that really mean, that i am starting with less gearing? In the t-case are the hi and low gears different from the base to the adventure or only the low? Thanks!

Only the low range gear ratio is different. The only gearing difference for day-to-day driving would be between a manual and an auto.

[marin8703]

Originally Posted by Sewie

Only the low range gear ratio is different. The only gearing difference for day-to-day driving would be between a manual and an auto.

does anyone know if the pcmforless thing would calibrate the truck for 35s. The reason that i wopuld like this is because of my nav, it uses the VSS, is teh differnce between 33s and 35s gona throw it off. the nav is an aftermarket pioneer avic-z1.

i know this can be done my purchaseing a speed pulse generator from pioneer but its around 250, and it would be used only for the nav. are there any other options?

thanks.

[Desert Dan]

I Agree with Steve in San Jose

"Based on the way GM thoroughly engineered the H3, 32" or 33" inch tires are optimal, since a gearing change is not readily available."

Since we have an I-5, gearing is the only way to compensate for 35" tires. Off road in 4:1 low you might not notice it too much but on the highway?

35" tires are alot bigger than 33". If you change axle gears to 4:88 or lower the teeth on the gears get thinner (smaller) which are more likely to break and with bigger tires you are putting more leverage on half shafts, u-joints and front diffs.

Without changing anything and going to 35" tires your gas mileage will go down and acceleration will suffer. No ifs ands or buts!