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Determining Rear GAWR

cbwallace
Explorer
Explorer
I was reading another post and it got me wondering... I have a 2013 2500 HD with a rear GAWR of 6200 lbs. I have 265/70R18E Michelin's with a max load of 3525@80 psi per tire giving me a tire load capacity of 7050 per axle. The 3500's use the same axle and came standard with the 265/70R18E Michelin's, but the 3500's have a rear GAWR of 7050. Is there a difference in the load capacity of the wheels? If not, why the difference in rear GAWR? I also have to wonder why GAWR doesn't differ depending on what tire option a truck has from the factory.

In theory, shouldn't I be able to safely handle a rear GAWR of 7050 if I had air bags?

For the record, I have been to the scales and I am well within my weight ratings!
Chris, Barb, two girls, a Yellow Lab and a Sammoyed
2013 Chevy Silverado 2500 HD Duramax Crew Cab 4X4
B&W Turnover Ball w/Anderson Ultimate Hitch
2019 Grand Design Reflection 31MB
2007 Crownline 252 EX
Kayaks, Quads, Bikes and anything else we can drag along!
15 REPLIES 15

gmcsmoke
Explorer
Explorer
there's no difference in the wheels the rear axle is derated to fit under the lowered GVWR. The FAWR is the same for both 25/3500 trucks.