Thread: 255/70/16 vs 245/75/16 KM2's for a P38 - First post :)

Was talking talking to the owner of a local 4wd shop who told me that (very knowlegeable fellow); but it's just one opinion. Was just wondering if someone was driving on, say, almost worn out KM2s to verify it. Cannot be as bad as Kelly ATRs in the wet, a higher gip coefficient exists between baby poo and a wipe.

I've also been looking at the pro comps as well, which by all accounts are very good and quiet.

Just don't know.

Wet weather braking, noise and sidewall flexibility are my only concerns
If the KM2s brake as well at their AT's when half worn i'll be more than happy.

Ive gone 245/75-16 Wrangler Duratrac mud tyres. I love them. I didnt feel the need to go higher and these are 31.5" which improve over the 29" stock without rubbing. Mine still look very good after ~30kkm and are not noisy in the least. I havent noticed any reduction in grip, and I am very impressed about wet weather braking.

Can anyone tell me I was thinking of going 235 85 16s but I have not heard anyone mention these is this a good size or not?

Similar diameter to 265/75 but narrower tread so imagine if anything they will likely scrape slightly LESS. But the tread of my km2's doesn't technically have a flat 265 on the road and some AT's might actually have flatter/wider tread touching the road and thus have the corners sticking out further... Yeh its not so clear but hope you understand what I mean.

Sorry mate, I don't really understand, are you saying it's better to run the
265 75 16 or the 235 85 16? given the width issues

I would think the narrower tread will help with the clearance.

But my 265 KM2 only have just over 200mm in contact with the road and the remaining tread slopes off and doesn't appear to be the bit that touches. If the tyre had a more square shape and actually had 265mm in contact with the road then I'm sure they'd scrape much more.

My feeling is 235/85/16 is very unlikely to cause dramas, except maybe when eas failure occurs and no precautions are taken.
Keep in mind the axle and wheel "angle in" at the top when off road and pushing one side up into the guards. Quite different than eas failure when the body drops straight down.

265/75/16 most are ok but will scrape at some stage, perhaps some tread patterns will cause dramas though if they are tall and wide. Thing is not all 265/75/16 are the same height even, never alone the same tarmac contact path. I think the KM2 are almost what the calcs give.

Originally Posted by glenhendry

Ive gone 245/75-16 Wrangler Duratrac mud tyres. I love them. I didnt feel the need to go higher and these are 31.5" which improve over the 29" stock without rubbing. Mine still look very good after ~30kkm and are not noisy in the least. I havent noticed any reduction in grip, and I am very impressed about wet weather braking.

Glenhendry, size what rims were the 245's fitted onto? 7" or 8" wide?

Cheers,
HEYVJ

Don't know about you lot, but Silverstone AT 245/65-16's & MT 275/55 - 16's is my pick. These are fantastic tyres and swear by them, plus they're tough as nails. Silverstone is kinda the underrated quiet achiever in tyres. They don't spend huge in advertising, but boy do they make great tyres. Was considering Micky Thompsons, but after reading negative reviews and bad aftermarket service, I wouldn't even put them on my wheel barrow.