getting max wear out of m/t on road

[Safari Swb]

i do high milages in my safari and have 32 m/t's on. what sort of pressures should i be running to get the minimum wear out of them on the road??

[Denby]

The same pressures you run for getting home from the bush.... because you have taken the expensive M/T tyres off and put a cheap set of road tyres from trade me on it.

Alternatively you could run the M/Ts at 50 psi or more and only have the centre of the tyre making contact... but it will be interesting (and possibly expensive) when you need the brakes in the wet.

Basically, unless you drive like a nana on-road you will chew out the soft rubber compounds of M/T tyres.

[TJ]

I have been running BFG M/Ts full time on my TJ. So far I have done nearly 45,000 kms with tyres only half worn (all even). I don't know what else would you expect from M/Ts being run full time. My TJ being lighter compared to some of the Nissans/Yotas, my ideal pressure is 29 psi for on-road use.

[wjw]

I run mine at the maximum recommended pressure on the road, which for 35"MTR's is 35PSI all round.

[wopass]

I run mine at the maximum recommended pressure on the road, which for 35"MTR's is 35PSI all round.

you run them on the road at 35psi?? fark that, chew the shit out of them and be squishy as hell??

i would and do run a minimum of 40psi on the road, with the 35/12.5/15 there is still a good footprint on the seal and performs fine in emergency situations (ive done tests ) i run my ET's at 50psi for road use and they are fine also.

[skid]

and just to throw spanner in the works

I run my 80 series VX cruiser at 25psi, which has been over the scales, coming out at 2500kg

all day every day

33" nankang mudstars which have now done about 30000kms and still look like they are semi new

used to run them at 20 psi on my old BJ74

[wopass]

and just to throw spanner in the works

I run my 80 series VX cruiser at 25psi, which has been over the scales, coming out at 2500kg

all day every day

33" nankang mudstars which have now done about 30000kms and still look like they are semi new

used to run them at 20 psi on my old BJ74

JEEZUZ!! that would be floaty as hell ???

[skid]

and just to throw spanner in the works

I run my 80 series VX cruiser at 25psi, which has been over the scales, coming out at 2500kg

all day every day

33" nankang mudstars which have now done about 30000kms and still look like they are semi new

used to run them at 20 psi on my old BJ74

JEEZUZ!! that would be floaty as hell ???

like you, I have done tests

found it to be too harsh a ride at higher pressures, finally settled on 25psi

mine is a little floaty at present, but thats due to faaaarked bushes and shocks and springs and anything else there is under an 80

[wopass]

well there you go, when i got my 80 the MTR's that are on it were at 30psi and it felt like i was driving a boat but after airing up to 40psi its awesum

[wjw]

well there you go, when i got my 80 the MTR's that are on it were at 30psi and it felt like i was driving a boat but after airing up to 40psi its awesum

The max pressure for a 35"MTR is 35 PSI and in a truck that weighs around 2 Ton's......

[albundy]

I run my silverstones at 40 PSI on tarseal. I drive it on weekends only, but probably do 100-200 tarseal K's per week. Lasting alright thus far.

[wopass]

well there you go, when i got my 80 the MTR's that are on it were at 30psi and it felt like i was driving a boat but after airing up to 40psi its awesum

The max pressure for a 35"MTR is 35 PSI and in a truck that weighs around 2 Ton's......

im not saying your wrong mate because my MTR's are slightly different size but can you go and have a check of the max cold pressure... mine are 65psi max pressure and i have never seen any radial tyre ever that has a max pressure that low.

just curious really

[TJ]

Tyre pressure is a little trickier than just whatever the sidewall says, particularly where the truck has been modified with bar works / other weights.

Here is an article that describes the chalk technique to work what the correct tyre pressure for your particular situation:

http://www.jeepfan.com/tech/tire-pressure-chalk.php

Mine worked out at 29 psi for the normal weight I am carrying....

[wopass]

ok people, just to clear this up a little...

the man wants to know how to get the best possible WEAR out of his tyres, not the best footprint or best traction or best breaking performance so...more PSI= less rubber heat=less wear

keep inside the safe tyre recomendations i:e what is writen on the sidewall and your fine.

my recomendation is go to 40psi and check the road manners of the tyres at that pressure and drive accordingly, they will last twice as long at 40psi as they will at 30psi

[TJ]

more PSI= less rubber heat=less wear

Not entirely correct, but close enough. The only problem being that the tyre will start wearing off in the middle of the tread quicker (and not evenly across the entire tread area). That implies shorter tyre llife in my book. A tyre that is bald in the middle won't pass warrant or be safe.

[Flash2004]

more PSI= less rubber heat=less wear

Not entirely correct, but close enough. The only problem being that the tyre will start wearing off in the middle of the tread quicker (and not evenly across the entire tread area). That implies shorter tyre llife in my book. A tyre that is bald in the middle won't pass warrant or be safe.

I think you'll find that used to be the case with the old crossply tyres and from that era most of our handed down history and knowledge was developed and passed down.

Radial tyres don't bulge out in the middle of the tread surface unless they're too wide for the rim, at whatever pressure. The explosion factor comes in at about 200PSI and no one goes there of course.

[4WDbits]

Each tyre manufacturer makes there tyres differently, most obvious being side wall plies. The long and short of it is don't exceed the stated max pressure or max load. If you haven't got the max load on a tyre you won't need max pressure. Maxxis MT762 33/12.5R15 I fitted in the weekend have max pressure 35psi, same tyre in 315/75R16 have max pressure 50psi.
To get the best life from your muddies as well as be relatively safe on the road, run the tyres at the right pressure for your vehicle. The jeep article mentioned earlier is pretty much on the money.

[TJ]

Each tyre manufacturer makes there tyres differently, most obvious being side wall plies. The long and short of it is don't exceed the stated max pressure or max load. If you haven't got the max load on a tyre you won't need max pressure. Maxxis MT762 33/12.5R15 I fitted in the weekend have max pressure 35psi, same tyre in 315/75R16 have max pressure 50psi.
To get the best life from your muddies as well as be relatively safe on the road, run the tyres at the right pressure for your vehicle. The jeep article mentioned earlier is pretty much on the money.

Thank you, someone understands the need for assessing what is right for "your" vehicle - not anyone else's. Each vehicle that has been modified will have slightly different requirements.

[markr]

I run mine at 27 or 28 .... Works great..

[Steve_t647]

I run 3 of them at 30 and one at 30-26 (where you feel it a little bit and put air back into it) I have found if you leave the tyres in a warm garage for 3 or 4 weeks (the garage smell's nice) and they seem to wear well Also good tyre rotation is nice front to rear left to right (provided they are not directional).

If you run into a bus full of nun's because your tyre pressures were too high and could not stop effectivley then your Insurance company (if the investigation put it down to tyre pressure) can decline the claim then you have to deal with them and the big man later , this is probibly more of an issue if other people drive the 4wd as the owner will usualy know the vehicle.

mud tyres are most usefull when new to half worn, perhaps when these ones get suspect getting another set of tyres and rim's so you can swap for the more extreme trips.

[Safari Swb]

hmm i never really thought about what my braking e.t.c will be like. think i might give 30 psi a go

[hosehustler]

32PSI

[pagar]

Each tyre manufacturer makes there tyres differently, most obvious being side wall plies. The long and short of it is don't exceed the stated max pressure or max load. If you haven't got the max load on a tyre you won't need max pressure. Maxxis MT762 33/12.5R15 I fitted in the weekend have max pressure 35psi, same tyre in 315/75R16 have max pressure 50psi.
To get the best life from your muddies as well as be relatively safe on the road, run the tyres at the right pressure for your vehicle. The jeep article mentioned earlier is pretty much on the money.

I personally rum my Wrangler MTR's at 40psi on my cruiser, not for wear but for ride my lifted bus is like a whale so cannot afford side wall to add to my mis handling, the jeep page is a pretty good guide but you will find not a lot of difference in wear on a 12.5 inch wide radial mud tyre from 20 - 40 psi due to construction over inflate a SAT mud and bald the inside and no brakey brakey in the wet. for best psi test for your truck.

as to wear correct wheel alignment is the biggest thing to look at. as we take our trucks out and punish our suspension (including bashing steering arms on rocks etc) if you want to get the best out of your tyres have your wheel alignment done regular. I do my cruiser about every 3 months unless I know I have bashed something and it is only ever a minor adjustment but tyres are mint.

[3VILC]

Hrm interesting thread..so many people with each other preferences. I run my 33"s at 32psi. Seems about right, maximum patch area, and wearing nice and even. Although they are only on 7" rims at the moment But i find this works well, a little bit softer than on a wider rim rides a bit smoother and allows the shoulders to wear evenly. Strangely squirm a bit when you kick them, but dont really notice it when driving.

[DaveM]

I run my 33" Goodyears on the safari at 40-45

[wopass]

I run my 33" Goodyears on the safari at 40-45

glad im not the only one

[Flash2004]

I run my 33" Goodyears on the safari at 40-45

glad im not the only one

I run my Mickey Thomsons at 40 psi if I'm going any distance to a run and they are wearing nicely flat accross the tread. Certainly use less fuel and handles better at 40psi

[MudBum]

I run my Goodyear MTR's (33's) on the SWB Saf at 32psi all round since Rick (4wd Assc) recommended thats as the correct PSI, and have done 30000km's mostly road use on them and they are just over a 1/3 worn.Pretty happy with that.

[T-Boon]

when i got my N889 33.12.5's on, i asked the tyre guy, and he reccomended about 40.