Thread: BFGoodrich KM2 high tyre wear + pressures?

Originally Posted by uninformed

I know the OP probably has alloys, and I have no experience with Km2s, but I found 235/85R16 wore uneven and quick on stock LR 5.5 rims as supplied on 110s.

Recommendation for 235/85/16 is a rim width of at least 6"

I also run a set of road tyres on the alloys and a set of touring rubber on Disco steels for trips. I now have KM2's on these rims and will be setting off for a 7 to 8 thousand k run in July and will be interested to see how they go.

Originally Posted by numpty

Recommendation for 235/85/16 is a rim width of at least 6"

I also run a set of road tyres on the alloys and a set of touring rubber on Disco steels for trips. I now have KM2's on these rims and will be setting off for a 7 to 8 thousand k run in July and will be interested to see how they go.

yes indeed, but 235/85R16 is the metric replacement for the 7.50R16 and is common on 110s with stock rims.

Originally Posted by uninformed

yes indeed, but 235/85R16 is the metric replacement for the 7.50R16 and is common on 110s with stock rims.

Yes, 235/85 is near enough the same rolling diameter as a 750/16 but they are 1 3/4" wider.

So you're saying that the manufacturers advice is not worth following? To each his own I suppose. Bit like running tubelesss on LR tubed rims.

Stock rims on all later model 110's, at least from 2006, are 7" alloys which will fit a 235/85 comfortably, whereas 130's have 6.5" rims and these are fitted with 7.50's.

I have about 60,000km on mine now. Most of that work (42,000) was heavily loaded on poor roads.

I would think 75-80,000km would be about average for most.

However, having said that, I think they are past their best around the 50,000km mark if used heavily.

G

A lot of your reported tyre pressures are quite a bit higher than I use. I guess I enjoy the comfort of sub 30psi pressures more.

Happy to drop the pressures and get better ride... thought this would make the tyres wear more though, not less?

Originally Posted by Samblers

Happy to drop the pressures and get better ride... thought this would make the tyres wear more though, not less?

That depends on what you started with. All Land Rovers are created equal, but owners change them as soon as they leave the showroom and each one is different. Some leave them relatively standard while others add kilo after kilo and they should run pressures to suit. Tyre size may have an influence, as I run 33/12.5-15s, so what you run in 235/85-16s would be different too.

You can do the 'Michelin Test' where you set the cold pressure, then drive normally for a time and check hot pressure. If it has gone up 3-4 psi, all is good (I can't remember the exact number for LR), if the pressure has gone up more increase your cold pressure, if the pressure has not increased that much lower your cold pressure. Someone will surely correct me with the exact time and pressures, I have also seen it called the 'Pirelli Test'.

Jeff

Yeah might do that, thanks

I'm not dripping with accessories, just bullbar at front and roof rack on top. Wife, 2 lodgers, the occassional takeaway coffee. I'm not driving round the Pilbara on gravel roads either. Hmm ...