285-mileage

[Sierra5.3]

Just wondering what kind of milage you guys are getting with 285's? I had 285's on 8 inch rim getting about 14-15 mpg.

[RyanbabZ71]

I have mine on the stock rims (for over 15K miles now) and i have been getting (before and after the tires milage stayed pretty much the same) 11-13 city and 16-18 highway

[Sierra5.3]

How much psi are you putting in your tires? thanks

[RyanbabZ71]

for the 1st 3-5K miles i ran 55psi all around

 

Then i switched to 52 fronts and 50 rears.  

 

Seems to ride and wear fine

[kaspar139]

Geez, I run my tires at 35psi all the time... do you think I could gain some gas mileage with increase psi?  It would take some of the tire off the road.   :but:

 

And, I average 14mpg with 50-50 highway/city driving, and 17 pure highway.  

[Shaners]

Geez, I run my tires at 35psi all the time... do you think I could gain some gas mileage with increase psi?  

If you are running the stock "P" rated Firestone Wilderness tires, I wouldn't air them up very much.  Those tires aren't rated for higher pressures.

[kaspar139]

No, I have the 33" BFG Mud Terrains!  What should they be aired up to?

[Shaners]

No, I have the 33" BFG Mud Terrains!  What should they be aired up to?

Sorry Frank, I should have looked at your signature...

 

I would run them at 45-50 psi for starters.  I would run a few more psi in the fronts than the rears.  Your probably going to notice a harsher ride over bumps and expansion joints, but it should really help the tires wear better and you could see some better fuel economy too...

[kaspar139]

Cool, thanks.  I'll give it a try and keep ya posted!

 

[tyrod212]

I've got BFG's, 285/75, I get 14-15 on the average....16 on a long distance interstate drive.

 

 

2001 Silverado LT ext. cab 4x4 ...pewter

K&N FIPK

BFG'S 285/75

dual exhaust

Speedliner spray-in bedliner

[sincityZ71]

I average about 11; 12 if I am lucky and actually get to drive at a nice constant pace for more then 3 seconds.  That is pure city driving with an average trip distance of about 4 - 5 miles and about 8 stoplights.  Don't know what my best highway milage would be because the farthest drive I have done at one time/oneway was only 35 miles, I need to take a nice trip sometime.

[brax71]

average 13-14 day to day, 15-17 highway.  

got 19.5 once -- 250 miles at 60 mph just for kicks.