let me get right to the point.....

I have a customer with a 2000 Hummer H1 who is interested in adding 26 inch chrome wheels for his truck, Kumho just released a low-profile 26 inch tire along with a service bulletin warning that under no circumstance this tire be mounted in an application where the maximum load exceeds 2,124 lbs per tire. Here is a link to the complete bulletin http://www.kumhousa.com/News/News2003.asp#may16 ...

I did the calculations to determine the maximum load capacity for this Hummer as follows:

1) GAWR = 6,800 lb ( Heaviest Axle)
2) 6,800 lb /2 = 3400 lb tire load
3) Rated load for the 26 inch Kumho Tire is 2,337 lbs
2,337/1.1 = 2,124 lbs
4) The 2,124 lb tire load doesn't exceed the 3400 lb load of my Hummer!

So according to this I can't put 26 inch rims on this Hummer, I'm curious is there a way I would be able to reduce GAWR on this Hummer so that I would be able to fit the 26 inch rims without problems? Is this upgrade totally out of the question?

I would appreciate any help I can get ,

Kind Regards,

 

muliply 2124 x 4 tires = the max weight of the vehicle to be supported by the tires. H1's are very well balanced, tire loads should be pretty evenly distributed. Front will be a little heavier, but only by a few hundred pounds.

Take that number and compare with the GVWR of the H1. Divide the max weight by the GVWR to give a percentage.

If the GVWR is 12,000LBS and tires can hold 8496 lbs, your percentage is about 71% I would try to keep that lower than 65% and I think you would be fine to run the 26in tires.

As far as ruducing weight, good luck, not much to get rid of that is not running gear. All the interior stuff may weigh 500LBS but where will you sit?

Here's a thought, look at the ratings on the stock tire. If that rating is not even remotely close to the 26 inchers, I would not use them. A few hundred pounds will not hurt anything, tires are underrated for safety.

 

if ur puttiing 26s on it, u may as well just go all out and throw spinners on that too.

 

and a lift kit maybe