zx12-iowa

I'd have thought the opposite since the longer wheelbase weighs more and everything else is the same.

Wannafbody

Both are 13 F150 XLT's 4x4 SCREW with 145 inch wheelbase. The 7200 Ecoboost is mine and the 7350 5.0 is my cousins. The only difference I can think of would be either different equipment packages(mine's a 302A) or different gearing(mines a 3.55, my cousin wasn't sure what gears she has). I also have the 36 gallon gas tank.

After looking at the Ford chart, for some reason the 5.0 SCREW has a higher payload capacity as well. This is screwy.

crsstmbrs

Mine is 2013 supercrew with 145 wheelbase and is also 7350.

wonder what that 150 lbs difference is...

bluedsteel

My EcoScrew is rated @ 7700 GVWR because of the max tow package. Not sure what the difference is.

11screw50

leaf springs and coils.

same axle, same gearset, same rating on the wheels, same brakes.

It's a game they play.

Team Canada

Another thing that gets me a little confused is that my door sticker says 7350 GVWR with P275/65R18 tires.

If I had LT tires, would this affect GVWR? I know axles, springs, etc. add into this as well, but just curious..

smokeywren

You cannot change the GVWR of your pickup by changing any of the components. Only the manufacturer can do that. But if Ford had installed LT tires at the factory, then it depends on exactly which LT tires they installed and whether tires were the limiting component in determining the GVWR of your pickup. So change the question to "If Ford had installed LT tires instead of P-Series tires on my pickup, would that have changed the GVWR?" And the answer is maybe, but probably not. GVWR is based on the weight ratings of frame, suspension, axles, tires, wheels, shocks and maybe some other components. The GVWR will not be more than the lightest of those weight ratings.

P275/65R18 tires will have either service designation beginning with 114 or 116. If the service designation is 114, the max tire weight capacity is 2,601 pounds @ 44 PSI. 4 tires would have a combined weight capacity of 10,404 pounds. The two tires on your rear axle would have combined weight capacity of 5,202 pounds. So if your GVWR is less than 10,000 pounds and your rGAWR is less than 5,202 pounds, tires were not the limiter for computing GVWR. You could install tires with more weight capacity, but that would not add weight capacity to your tow vehicle.

If your P-Series tires are service designation 116, then you have even more excess weight capacity in your tires.

LT tires are not some sort of magic elixir. You can buy LT tires in size LT275/65R18 with load range C, D or E. LT tires with Load range C have less weight capacity @ 50 PSI that P-Series tires at 44 PSI.

P275/65R18 (service designation beginning with 114) = 2,601 @ 44 PSI

LT275/65R18C (service designation beginning with 113) = 2,535 @ 50 PSI