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H3 Tires

tgomes78

Well-Known Member
Messages
57
Location
Mendon
What's the biggest sized tire I can run on an 06 H3. Currently has 265/75/16. I want to run 285/75/16 falken at3


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Jack_M

Well-Known Member
Messages
90
Location
Vanderbilt, Mi
You will have no problem with that size I run that size in a BFG all terrain. I'm actually kinda glad I did not go with the 315/75R16 It's a dog now I can't imagine it with 35's on it.
 

Jack_M

Well-Known Member
Messages
90
Location
Vanderbilt, Mi
This is a bad pic but will give you an idea of what 285/75R16's will look like. truck 33.jpg
 

Enter Hummer

Well-Known Member
Messages
244
Location
Southwest
That green looks awesome. You dont see many in green.

Also, you have to remember that the bigger tire you get, the harder they are to balance. If I was purely offroading my truck, I would easily put 315/75/16 on but my little I5 might not agree on road.
 

Jack_M

Well-Known Member
Messages
90
Location
Vanderbilt, Mi
By dog I mean a kid on a bicycle could probably pass me! I travel a lot for my job and I notice my trans is always looking for a gear whenever there is a slight slope. highway gas mileage is usually right around 16 MPG on the 285/75R16 tires I can't complain about that. but if I am merging onto the freeway and there is a semi close its just better to let him pass me.
 

tgomes78

Well-Known Member
Messages
57
Location
Mendon
I have a jeep that did the same thing when I put bigger tires on. I'm just goin for a more aggressive look and stance.


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tgomes78

Well-Known Member
Messages
57
Location
Mendon
I'll post a pic when I get the tires on. I'm actually finishing up a motor rebuild on it now. Hopefully we will have it running sometime this week. It's been almost 3 months:


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tgomes78

Well-Known Member
Messages
57
Location
Mendon
I don't care about going fast... I never owned a car until I had a kid last year. I've always had 4x4 trucks and jeeps until I got this hummer. I still have a wrangler too.


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Chimpy

Well-Known Member
Messages
105
Location
Ohio
Not to hijack here but with an I-5, can the 06-07 H3 ECMs/PCMs be recalibrated for larger tire sizes? If so, Tech 2? I have only seen programmers for 08 and up.
 
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tgomes78

Well-Known Member
Messages
57
Location
Mendon
I never had to do that for any vehicle that I upgraded suspension or tires


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tgomes78

Well-Known Member
Messages
57
Location
Mendon
I don't even know what package it is. I'm fairly new to hummer. Haven't had it very long. Always had Jeep's


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Chimpy

Well-Known Member
Messages
105
Location
Ohio
The 285's are stock size for H3's with the offroad/adventure pkg. No mods are needed.

True, 285s may only throw the speedo off a little coming from 265s (as speed increases) but going to 315s will really throw the speedo off as well as cause the trans to "hunt", especially in OD. I have owned many lifted Chevy, Dodge, and Ford trucks/SUV with oversized tires (35s, 37s, 38s) and had to use a programmer or speed calibration device to eliminate the "hunting" issue on all of them. You don't want a transmission hunting all the time unless you enjoy rebuilding/replacing it. I love the look of 315s on the H3 but if I can't calibrate for it on my 06, I will just have to be happy with 285s.Good luck with what ever you decide.:)
 
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GreatDaneHummer

Well-Known Member
Messages
994
Location
Chicago
This is a true 35.20x12.5R17 tire on 17" rims. For them to no longer rub I have a 1" body lift and the front torsion bars lifted / replaced etc. Stick to the 285's unless you want lots of work to follow with it. Also, check the weight of the tire you are buying. Each one is different for example: Wrangler mt/r 35" tires weigh 64 lbs but the Pitbull Rockers weigh 85 lbs and yes you do notice the difference.

IMG_1850-min (1).JPG
 
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