|
09-09-2010, 12:17 PM
|
#1 |
|
Resident of Here
Join Date: May 2008
Location: Wesley Chapel, FL, USA
Posts: 7,716
|
What psi do you run?
What psi do you run in your tires on-road. We run 5lbs less than max in the BFG A/T's on the Suburban. Thats what I do on all my vehicles, better mileage and tire wear.
__________________
~Bradley~ 2004 Black GTO LS2/T56 too much to list  Miss having a truck 
|
|
|
|
09-09-2010, 04:50 PM
|
#2 |
|
20' Daredevil (Ret)
 
Join Date: May 2003
Location: Jefferson State
Posts: 13,497
|
Re: What psi do you run?
I use a tread depth gauge to help determine correct pressure, and I rotate regularly to even out the wear. My K20 gets 30# unless I'm cutting firewood, then the fronts go to at least 35# and the rears get 50#. The Tacoma gets 32# all around.
The right pressure varies with vehicle weight, how it's driven, size & type of tire, and probably a few other factors...
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay Last edited by Stocker; 09-09-2010 at 07:53 PM. |
|
|
|
|
09-10-2010, 12:46 PM
|
#3 |
|
Local Redneck Authority
Join Date: Mar 2009
Location: Grand Rapids, MI
Posts: 584
|
Re: What psi do you run?
I was told to use sidewalk chalk on a flat parking lot... Cover a large patch on each tire, then drive 50 feet or so and see if it all wears off or not. Also good way to check toe alignment...
__________________
-Kevin four on the floor feel the beat in your soul movin to the rhythym pumpin til ya cant take no more dance if you want to do what you came to you cant ignore the feeling of that four on the floor |
|
|
|
|
09-10-2010, 01:26 PM
|
#4 |
|
20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,497
|
Re: What psi do you run?
^ The chalk method is a good start, but only for straight-line driving. If you do a fair amount of cornering, you'll need more pressure to avoid excessive wear on the outer edges, especially on the fronts. That's why I use a tread depth gauge -- it will find differences that are too small to otherwise notice.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
|
|
|
|
09-10-2010, 10:15 PM
|
#5 |
|
Registered User
Join Date: Oct 2009
Location: Leesburg, VA
Posts: 424
|
Re: What psi do you run?
My Co-op bias plys are kept at 40psi front and back on road and I usually drop them to about 20psi off the road.
|
|
|
|
|
09-10-2010, 10:30 PM
|
#6 |
|
Registered User
Join Date: Aug 2009
Location: S.C.
Posts: 1,593
|
Re: What psi do you run?
My tires are 80 psi max. IIRC, the rears are at 70, fronts are 45-50. 70 in the front was too harsh a ride without the plow on.
Treadwear still looks good, but I don't think I've put 3000 mi on it yet.
__________________
'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold  )I'm kinda like duct tape- no real purpose, but handy to have around. |
|
|
|
|
10-06-2010, 10:31 AM
|
#7 | |
|
Registered User
Join Date: Sep 2009
Location: crawfordsville, IN
Posts: 29
|
Re: What psi do you run?
Quote:
__________________
current trucks= -DD 90 RCSB 4x4 350/700r4 (green goblin) -87 RCSB 4x4 on 3/4 tons. 355/built 700r4.np208(soon to be 205). 10 bolt front 3.73s. 14ff rear 3.73s. 6inch suspension 3inch body. 37x12.50 Wrangler m/t military's. (sinister 13) Past 73-87s= -81 RCSB 4x4 built 350/SM465/205. 6inch suspension. 35x12.50 courser a/t's. 4.11s f/r (ravvid red) -80 RCLB 4x4 454/350/205. 6inch suspension 3inch body. 38.5 gumbos. (mudslut) 17 years old. have had 13 different vehicles. no wrecks. |
|
|
|
|
|
10-07-2010, 09:08 AM
|
#8 |
|
Registered User
Join Date: Jun 2010
Location: Pittsburgh PA
Posts: 686
|
Re: What psi do you run?
I run mine at 30 and am going to go up to 40 and test that out. trial and error for me here.
__________________
86 Suburban 2WD = rolled it and totaled it 83 LWB STD Cab 4x4 = went to the scrapper. Was my baby. 84 Suburban 2WD = stripped it/ scrapped it 81 8 foot bed made into a trailer 86 Suburban going to be made into a trailer 91 Suburban 4x4 = that's my baby 00 S10 Xtreme STD Cab 01 S10 ZR2 |
|
|
|
|
10-07-2010, 10:42 AM
|
#9 |
|
Registered User
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
|
Re: What psi do you run?
Determining proper tire pressure is kinda tricky. Alot of things come into play when figuring what is proper presssure like tire size, side wall ply and rating, wheel width, front/rear weight of vehicle, load carried, etc even time of year. Ultimately your tire and vehicle will tell you what's needed, ya just need to read and listen to it.
__________________
Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
|
|
|
 |
| Bookmarks |
|
|
Linear Mode
