MAX TIRE Size and wheel combo on stock H3?
 

Hi,whats the most common maximum tire diameter the h3 base luxury will take with out rubbing etc..I have torsion keys to level up the front 2"..even though i just read here u can level it another way at the torsions,thankyou

Hello and Welcome from MI.

There are tons of threads on tires size for the H3/H3T. Please take some time and use the "search" tab at the top of the page. Read some of the posts and post up if you do not find the information you are looking for.

tripper, all the I5 H3 models have the same suspension whether Base, Lux, Adventure or H3X and can fit 35's without a lift. Rubbing will depend on the actual tire brand and a Tbar crank may actually cause a rub where it didn't before. The Championship Edition/Alpha H3's have higher rate torsion bars but the same suspension geometry otherwise. So it really doesn't matter which H3 you have, they all can take the same tires. With a Daystar 1" body lift you could run 37's but they will weigh a ton and will cause trail damage sooner rather than later and you might decide the gearing is too high for the hwy with them.

I agree with the first two posts

I agree with the first 2.5 posts.

I'm not a doctor but I play one on tv and I approve of the approval. ;)


*no electrons were harmed in the transmittal of this message.

If you can return those indexing keys and get your money back, do it !
As you have read here, they are not neccessary, just do the torsion bar level.
Indexing keys = waste of money.

Oh boy. :rolleyes:

Hell, I'm surprised ! On other sites you would have had at least 20 cranky meatsacks posting "The search function is your friend" comments !!! Not here though, only one and it wasn't mean at all. Half-hearted effort out of tradition likely. Must be on the right forum !!! ;)

Now, to answer your question: The search function is your friend !

Sorry, had to....

I just put 315/75/16 (35's) on mine last week. No rubbing even at full lock, reverse, and fat mother-in-law riding shotgun. Could have easily gone 37" with my brand, but as stated above, you wouldn't go anywhere very fast at all. 35's suck the life out of the I5 engine.

Once my Bell Jet Ranger swap is complete, I'll probably do the 37's, and may upgrade the brakes.

Oh, and welcome from me too !!!

Mike
SkinGripz Inc.

315/75/16's here also with no problems at all and on stock ride,no lift yet :)

I have an '06 H3 Base. It is not (yet) leveled. This weekend some poor 80 year old man sideswiped me at ~ 10-15 mph coming off a fwy offramp.

Anyways, I have 265/75/16s on stock chrome wheels and I'm working to make the most of an unfortunate situation and ordered 20x9 KMC XD Monsters in flat black (XD77829067718).

I was recommended 285/50-20 or 275/55-20 and wanted to see if anyone had any recommended tires or their 2cents to add. I guess the 50 series would affect any spedometer variance less. But any recommended brands, etc?

Thanks!
Eric

35/12.5/20s are the only ones that are not gonna ride rough. I ran 18s with 35s and it rode worse than stock

The 285/50/20 tires would be about 31.22" diameter (smaller than your OEM tires)
The 275/55/20 tires would be about 31.90" diameter (slightly larger than your OEM tires)

My 2 cents is that either choice would look ridiculously small on an H3.
You want to have at least a 33" diameter tire or even better a 35" diameter.

Nice job on digging up a FOUR YEAR OLD "how big of tires will fit" thread. :rolleyes:

oh. so you think that even the 55 series at ~1.1" smaller diameter difference would look ridiculously small?

crap. I ordered the Yokohhama Parada Spec-X today from Americas Tire.

What would bring it closer to the orig overall diameter? 285/65/20? I don't even know if they make those.

You need a WIDER tire as you go up in diameter. Look under 305, 315 or 325 sizes.

Really, 2 pages of discussion for some rubber band tires on RIMZ!

Im sure you are a smart kid and can find a tire size converter online and type in 285/75R16. Tons of converters out there...
https://tiresize.com/

I have 18" wheels and heavy tires and it's Killing my horsepower, not to mention its and 3.5, Does anyone have any suggestions?? I'd be tempted to put stock wheels and tires back on, but i don't have them.

Have PCMofNC tune your PCM to adjust for larger heavier tires and other options,
Hummer H3 Mail Order Tune

I ordered some 315/75 16's for my stock wheels yesterday.
They should make the truck look beefier

I ended up going with Cooper 275/60/20s. I bought the torsion bar key levelers but didn't end up installing them yet. Anyways, this is the end result

https://scontent.fsnc1-1.fna.fbcdn.n...92928955_o.jpg

[QUOTE=djl1qu1d;331917]I ended up going with Cooper 275/60/20s. I bought the torsion bar key levelers but didn't end up installing them yet. Anyways, this is the end result

Then return them, there are a bunch of very clear threads on how the OEM keys will provide all the lift the truck can take (ie. 23.5" fender lip to hub center). After market keys are a bogus item, not needed, they just deflate the cabbage count in your wallet, completely useless.

Nice job on the Coopers!

You know, I just noticed that you don't have a spare tire back there. Pretty slick!