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View Full Version : 35" Cooper Discoverer STT Installed

yat74
11-09-2006, 10:26 PM
I put them on the other day and they look awsome, pictures to follow soon (when I finally put on the RRO rock rail super sliders). The bigger tires make the truck, can't wait to get them offroad. Some things I have noticed since putting them on...Only minor rubbing when steering wheel is fully turned to the left. The only major thing I have noticed is a huge decrease in MPG. From reading all the posts on 35" tires I was prepared to lose some MPG but I think that what I'm getting now is alot less than before. I'm still trying to get an accurate MPG figure as this is only the first tank on the Coopers. I have been keeping the jack rabbit starts of the line to a minimum and speeds under 65mph. All in all I am very happy with the tires and I didn't buy the H3 for its fuel economy anyway. What pressure should the 35's be inflated to for highway driving? Offroad I was told I could probably go down to 12-15psi with no probs. Any suggetions?
HUMMJAY
11-09-2006, 10:32 PM
I have 35x12.5 ProComp XTerrains, dealership put them at 40psi. are you running 16" wheels?
yat74
11-09-2006, 10:51 PM
315/75/R16
Sewie
11-10-2006, 12:47 AM
32832
Sewie
11-10-2006, 12:49 AM
Oh yeah, and I run the Toyos at ~40psi. Higher than that and they start crowning. But some are running other brands as high as 50psi.

Also, remember that your speedo/odo is going to be off with the bigger tires so the hit in mpg may not be as bad as you think. Mine dropped about 1-3mpg depending on the type of driving.
Idaho-Hummer
11-10-2006, 06:23 AM
32832


:iagree:
HUMMJAY
11-10-2006, 10:42 PM
not sure how low i would want to go on the psi, with the 16x8 wheel there's alot of bowing in the tire already at 40psi
NEOCON1
11-10-2006, 11:53 PM
nice :beerchug: you should be able to air down to 15 psi without any problems :D
MisterE
11-11-2006, 01:23 AM
not sure how low i would want to go on the psi, with the 16x8 wheel there's alot of bowing in the tire already at 40psi

HUMMJAY (from other thread) that was your truck. Man that thing kicks A$$ in person. We loved everything about your ride! Did you or have you had problems with those tires chewing up the inner fenderwells? I loved the looks of those tires super meaty and tons of tread...

Very nice ride!
TA8088
11-12-2006, 05:00 AM
32832

:iagree: I wanna see pics.
usetosellhummer
11-12-2006, 05:07 AM
sweet, lets see the pics
reddevil
11-12-2006, 06:19 AM
sweet, lets see the pics

I just mounted some BFG MT 315/75/16...They look really good, but I did notice a big drop in MPG. I haven't figured out how much the drop is, but as soon as I do I'll post it
HUMMJAY
11-13-2006, 03:36 PM
HUMMJAY (from other thread) that was your truck. Man that thing kicks A$$ in person. We loved everything about your ride! Did you or have you had problems with those tires chewing up the inner fenderwells? I loved the looks of those tires super meaty and tons of tread...

Very nice ride!
thnx man! no problems with the ride hight, i was consernd at first but we bounced around the mounds with no damage to the truck or the tires:fdance:
HUMMJAY
11-13-2006, 03:39 PM
I just mounted some BFG MT 315/75/16...They look really good, but I did notice a big drop in MPG. I haven't figured out how much the drop is, but as soon as I do I'll post it
I'm not sure yet, I havent ben paying close attention but I think I've dropped about 50 miles per tank. I filled-up yesterday and hit the reset on the trip, should know for sure by the end of the week