lighter weight oil = better MPG???
#22
03-12-2012, 08:38 AM
I took my E rated tires off as fast as I could, it was almost unsafe with how stiff it went over bumps. My new D rated Pro-Comps have just as high of a load rating however in lbs.
FWIW, every tire I've run I've typically run right about the max labeled on the sidewall and the rears ALWAYS wear out in the middle first. Fronts seem ok. My rear tires really need less air in them. I'd imagine if you were towing a lot, it'd probably be ok though.
FWIW, every tire I've run I've typically run right about the max labeled on the sidewall and the rears ALWAYS wear out in the middle first. Fronts seem ok. My rear tires really need less air in them. I'd imagine if you were towing a lot, it'd probably be ok though.
#23
03-12-2012, 09:24 AM
#24
03-12-2012, 10:45 AM
Diesel Enthusiast
I put a large air dam under my front bumper to move the air around the truck,rather than between the front axle, frame, transfer case, etc. , that helped a bit. I'd also check out Airtab.com, they got me 32 mpg on my 88 Accord, up from 30. Unfortunately my Dodge is too curvy out back to install them for maximum effect.
#25
03-12-2012, 10:58 AM
Diesel Bomber
I took my E rated tires off as fast as I could, it was almost unsafe with how stiff it went over bumps. My new D rated Pro-Comps have just as high of a load rating however in lbs.
FWIW, every tire I've run I've typically run right about the max labeled on the sidewall and the rears ALWAYS wear out in the middle first. Fronts seem ok. My rear tires really need less air in them. I'd imagine if you were towing a lot, it'd probably be ok though.
FWIW, every tire I've run I've typically run right about the max labeled on the sidewall and the rears ALWAYS wear out in the middle first. Fronts seem ok. My rear tires really need less air in them. I'd imagine if you were towing a lot, it'd probably be ok though.
---AutoMerged DoublePost---
but where they 305s? my stock 245 Es where 80 PSI max. i think the 285 Es where 70 or something.
most larger tires in the D range can hold just as much or more weight then the 245 E range can and have a lower max PSI.
these are the ones i have. talked them into about $165 each
Tire Details - Discount Tire
most larger tires in the D range can hold just as much or more weight then the 245 E range can and have a lower max PSI.
these are the ones i have. talked them into about $165 each
Tire Details - Discount Tire
Last edited by tiremann9669; 03-12-2012 at 10:58 AM. Reason: Automerged Doublepost
#26
03-12-2012, 11:25 AM
Diesel Enthusiast
It depends on how much weight is on the tire. Industry group TIA, as well as several tire manufacturers, print charts that indicate how much air pressure will provide the best wear at given load weights. Check with you tire dealer, manufacturer's website, or just google it.
#28
03-12-2012, 01:11 PM
#29
03-12-2012, 01:41 PM
Diesel Enthusiast
Required by who? The DOT just requires that the weight on the tire not exceed that tires rating at the air pressure its currently at. If you have a larger tire, or always run empty, a D or even C rated tire may be legal at the appropriate pressure, not to exceed the sidewall rating. Then again, GM is liable to deny warranty service if you run a different tire size than they specify.
I thought a 3500 is a one ton, and a 2500 is 3/4 ton.
I thought a 3500 is a one ton, and a 2500 is 3/4 ton.
#30
03-12-2012, 03:05 PM
Required by who? The DOT just requires that the weight on the tire not exceed that tires rating at the air pressure its currently at. If you have a larger tire, or always run empty, a D or even C rated tire may be legal at the appropriate pressure, not to exceed the sidewall rating. Then again, GM is liable to deny warranty service if you run a different tire size than they specify.
I thought a 3500 is a one ton, and a 2500 is 3/4 ton.
I thought a 3500 is a one ton, and a 2500 is 3/4 ton.
