1400x20s on M813 - Steel Soldiers::Military Vehicles Supersite

M215 · 08-19-2009, 23:07

Hello SS,
I finally have the 1400x20s mounted on the Hemitt rims, hubs flipped and tires installed under the truck. My first road trip was at 50 psi and the truck was all over the road. Increasing the pressure to 60 psi helped. Tomorrow I'll try 75 psi.

Any recommendations on tire pressurs?

Thanks, Karl

area52 · 08-19-2009, 23:36

What kind/tread on the 14.00's? I have heard ( no experience myself) that the higher the pressure should result in a better ride/control.

Oh yea...

jwaller · 08-20-2009, 08:34

unless you just like extra work, flipping the hubs was a large waste of time. flipping the rims is much quicker and easier.

M813rc · 08-20-2009, 11:53

Karl, in the summer I run 60psi in the front tires and 50 in the back. That works nicely in Texas where the tires heat up quite a bit on the road. In winter I bump them all up 5psi more. That is for empty or lightly loaded on Michelin XL's, gives good control without wandering, but doesn't launch you every time you hit a bump. I'm told the Goodyear type tires run a higher pressure, but have no personal experience there.

Just FYI- The Marines didn't flip the hubs on their 809 or 939 series (mine is stock Marine setup, came out of service as-is), they just installed the rims deep dish in like Jwaller suggested.

Cheers

emr · 08-20-2009, 12:06

I run 65 in my 14;s and they are just fine all around, i am trying 75 in the front just for they hay but have no time on them yet. my mich XL;s in duels on the deuce i run 50 rear and 60 front, sweet ride.I watch for wear alot, and that is what i go by mostly, i want good even wear and i rotate em also,

steelsoldiers · 08-20-2009, 12:15

The CTIS on my 923A2 kept them at 60 psi and that did fine for the trip to Aberdeen and back at ~60 mph. They didn't get too hot and they wore evenly.

M215 · 08-21-2009, 21:56

Quote:

Originally Posted by jwaller

unless you just like extra work, flipping the hubs was a large waste of time. flipping the rims is much quicker and easier.

I agree, it was a lot of work, but it was what I wanted. Flipping the rear hubs allows the rims to all face the same way, bolts out with the hubs flush with the face of the rims.

Currently I have the tires at 75 psi, leave tomorrow for the M221 recovery, guess I'll play with the pressure until I find the right spot.

Karl

cbvet · 08-21-2009, 22:10

50-60 PSI works good for me. Michelins on the rear & Goodyears on the front.

dm22630 · 08-22-2009, 14:00

I run 75psi on the front & 55 psi on the rears.

M813 w/w & 16.00-20s on Hemtt rims....

panzerwillie · 08-22-2009, 23:29

What do you guys mean when you said flipping the HUBS i can see the difrents on the rear tires with the rims looking like in the front but can't quiet figure out flipping the HUBS term
thanks