highway tyre pressures ?

[Wazza1978 Junior Member Find all posts View Profile Close Wazza1978]

Hi guys just wanted to know what pressures you guys run on the highway. I cant remember what size tyres I have and not going out there now haha / Standard 16 inch x 7 steel rims. I got bfg a/t on

[Taresk Member Find all posts View Profile Close Taresk]

Re: highway tyre pressures ?

Depends on the tyre, I run 32psi in the ProComps, but the standard tyres it came with were usually running at 36-38psi depending on what kind of load I had. If you've got standard size tyres, your best bet is to stick with what it says on the placard, if you're running bigger rubber, you have to experiment to find the best ride/handling/wear compromise.

[vivioman Junior Member Find all posts View Profile Close vivioman]

Re: highway tyre pressures ?

Running 38psi for 265/70/16s Maxxis 751s on std sunny type steel rims for highway.

[K & M McF Senior Member Find all posts View Profile Close K & M McF]

Re: highway tyre pressures ?

We run 36 psi front and 40 psi rear for BFG A/T on standard mag wheels on road and off road, towing boat or empty. Never a problem and wears even.

[Wazza1978 Junior Member Find all posts View Profile Close Wazza1978]

Re: highway tyre pressures ?

cheers thanks guys think i will run 38 all round see how it goes am towing a trailer from vic to coffs harbour in a week and abit might increase rear see how the feel under load

[RogueAussie Senior Member Find all posts View Profile Close RogueAussie]

Re: highway tyre pressures ?

Was advised when I got my Goodyear Wrangler Silent Armour A/Ts fittied to run them at 40 all round.

[xlr8_87 Advanced Member Find all posts View Profile Close xlr8_87]

Re: highway tyre pressures ?

40-42psi all round on Goodyear Wrangler MTR's

[mathewmeldrum Member Find all posts View Profile Close mathewmeldrum]

Re: highway tyre pressures ?

I find 38 or 40 is good,
Bob Jane said i should be running 38 in the front and 36 in the Rear.
But it just didn't feel right.

[glen_ep Addicted PP Member Find all posts View Profile Close glen_ep]

Re: highway tyre pressures ?

Daily road use: 36-37
Road use whilst loaded up: 38
Dirt roads: 28-30
Offroading 26-28
Sand: 10-20 depending on how packed the sand is

Tyres are Mickey Thompson MTZ 265/75R16

[Wazza1978 Junior Member Find all posts View Profile Close Wazza1978]

Re: highway tyre pressures ?

thanks for all the feed back guys

[StormyKnight Advanced Member Find all posts View Profile Close StormyKnight]

Re: highway tyre pressures ?

To be honest you can run them over a wide range of pressures without any issues. My experience is with the BFG MT & MT2's so your mileage may vary if your tyres sidewalls aren't as stiff &/or the max pressure is less than 65psi.

I use the same pressures front/rear unless I have a trailer on. Add 5 psi for that but not over 50psi.

36psi - 50psi cold
lower pressure gives better comfort but poorer fuel economy

50 was good for the freeway but still some pitching on the concrete sections - 10.4l/100km sitting on 115km/h
40 psi basically means you feel every bump in the road & some secondary roads are worse than many dirt roads, used if going on a trip fully loaded - no trailer
36 psi when empty & being a shopping trolley

Basically there is no one answer, every tyre is different & every driver is too! Not to mention suspension - I'm still running standard after 200,000km....that may be my problem :shock:

Cheers

[g.t Junior Member Find all posts View Profile Close g.t]

Re: highway tyre pressures ?

I run 35psi cold which is about 38/39 hot on my tyres
Every tyre will be different though

[GeoffJ Lurker Find all posts View Profile Close GeoffJ]

From the Coopers site.
As a general rule, the following can be used - for road use only: For passenger tyres, inflate your cold tyres to the recommended tyre pressure on your vehicle’s tyre placard*. Then to determine if you have the correct pressure for a given load, note the cold pressure reading. Drive for at least 20-30 minutes to ensure they have reached operating temperature and then check again. Ideally, they should be about 4psi above the cold pressure. If the pressure is more than 4psi above the cold pressure, you should add more air. That is because there is too much friction, which builds up more heat than desirable. Conversely, if they are less than 4psi above cold pressure, the cold pressure is too high.

[krypto Avid PP Poster! Find all posts View Profile Close krypto]

Check how much your pressure is going up from cold to running temp, which will tell you how hot your tyres are getting.Heat kills tyres (GeoffJ is spot on)

I always aim for a 10-15% rise in pressure. Fully loaded and towing on the highway that means I am running 52 in the back and about 46 on the front. Around town I run between 38-40. 32 is way too low and effects handling particularly in emergency situations such as sudden braking. Try avoiding an obstacle on a test track with low trye pressure and see what happens.

On heavy corrugations when fully loaded I drop to about 30 on the front and 38 on the rear. I used to not bother changing the pressure but cracked guards were a direct result.

For off-road, I assume you mean 4WD it really depends on what you are doing, rock, sand etc and pressure can vary from 12-35.

[120D4D Avid PP Poster! Find all posts View Profile Close 120D4D]

What tyres are you running krypto?