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what is the biggest tire

bubba377

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bubba377 Enthusiast

bubba377

Posted
Posted

I am sure this has been asked before BUT! what is the biggest tire I can install on a 2005 gmc 2500 HD with out cutting the front bumper .I considered turning the torsion bars up 4 turns to get the bigger tires in the fender wells but I am conserned about the ride quality (alittle) the truck only has 412 miles on it .THANK YOU FOR YOUR TIME :D

Chevy Tough Enthusiast

Chevy Tough

Posted
Posted

Go for 285's, i know guys who used 305's on there trucks but had to trim the bumpers and around the fendors to accomdate the extra tread on the tire, i got 265's on my HD, so hope that helps. :D

crunchy Enthusiast

crunchy

Posted
Posted

You could move the front bumper forward. Pull the bolts out, get a handfull of washers and some longer bolts, put it all back together.

That and some sheet metal bending and I got 35s under my 2500HD.

 

crunchy

dannyukonxl Enthusiast

dannyukonxl

Posted
Posted

285's would be the max i would want to go, thats a lot of tread, plus i think the dealer here voids the warranty if 33 inch tires or bigger are installed, i know someone with 22's and 305 45's which is a 32 inchish tire who got told his warranty was voided by the bigger tires :D , that was a suburban though, those new 05's are pretty sweet looking trucks and i think they raised them a bit so maybe a little bigger than 285 can be run, maybe a 295 or even 305 if you crank the bars :chevy:

2003yukonxl2500 Enthusiast

2003yukonxl2500

Posted
Posted

Just installed Toyo open country 285/75/16's on a '05 2500HD with the stock rims and had very slight rubbing on the inner fender area. They look great overall. We did not turn the torsion bars.

Shawn T Enthusiast

Shawn T

Posted
Posted

You should be OK with 285/75 16's on the stock wheels. The Chevy's have a little more clearance on their lower valance than the GMC's. I would be careful of the T-bars though. Four cranks is probably to much. You will get about 1/2 inch per crank and anything over 1-1/2 inches is cutting it close with the stock shocks. If they are adjusted two inches the first deep dip you hit or speed bump going to fast will be the last for your shocks. They will over extend. I have my T-bars cranked an inch-and-a-half and they have already bottomed out(I use my truck off road for the hunts). I am just waiting for a brand to make shocks for two inches of lift. The answer to your second question:The ride is not hardly effected at all on the HD pickups.

HvyChevyZ71 Enthusiast

HvyChevyZ71

Posted
Posted

Rancho 9000X's are approx. 2" longer than the factory shocks for the 2500 HD's. I plan to buy a set when they run the buy teh shocks get the adjustable controller free. I also run 315x75x16's with about 9 turns of the tbars and a little trimming, the ride is not to bad but i did make 1"shock spacers so my shocks wouldnt bottom out. My right tire rubs the sway bar at full lock, that is the only rubbing I have on the road.

Frank S Senior Enthusiast

Frank S

Posted
Posted
You should be OK with 285/75 16's on the stock wheels.  The Chevy's have a little more clearance on their lower valance than the GMC's.  I would be careful of the T-bars though.  Four cranks is probably to much.  You will get about 1/2 inch per crank and anything over 1-1/2 inches is cutting it close with the stock shocks.  If they are adjusted two inches the first deep dip you hit or speed bump going to fast will be the last for your shocks.  They will over extend.  I have my T-bars cranked an inch-and-a-half and they have already bottomed out(I use my truck off road for the hunts).  I am just waiting for a brand to make shocks for two inches of lift.  The answer to your second question:The ride is not hardly effected at all on the HD pickups.

 

 

 

 

Actually, you get about .2" per full turn when cranking the bars.

 

I agree with you on the GMC's possibly having clearance issues because of the valance if trying to go 285's. That's why I'm just going to get 265's instead. It'll look good enough.

2004GMC2500HD Enthusiast

2004GMC2500HD

Posted
Posted

I have a 2004 GMC 2500 HD Regular cab 4x4 8.1/Allison

 

I put 285/70/17 BFG AT's on mine and had to trim the front bumper and front splash guard in the wheel well. Done carefully you will never know the difference and 285's look great. I recommend them, but they didn't fit on mine without some minor mods. I wouldn't touch the torsion bars. Just my opinion though. :lol:

bubba377 Enthusiast

bubba377

Posted
  • Author
Posted

do u have pics of the trimming that you did on the gmc and what did you use to trim it .thanks for all the replies the info is great :lol:

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