Thread: 285/70 R16s on a puma 90?

Defender section has numerous posts on wider. Yes they will scrub n rub. My td5 with boost alloys +30mm did with 255/85(33.2in).Fitted spacers to Take it to zero. Others with 285 (33in)and 315 (35in)go -25mm offset wheels

I had searched and couldnt find anything puma specific about a 285's plent about which is the best tyre and whatnot though.

The boost are the factory weels on a Puma yes?

So i will likely need -25 offset Wheels to get them on, asuming if you needed 0's for 255's I would need 0's to go with a 265 also then. . .

Thanks.

285s aren't a legal fitment on 7 inch rims?

Originally Posted by n plus one

285s aren't a legal fitment on 7 inch rims?

I didnt even think about that. . . hmmmm

thanks.

Interested in why you consider the 235's a "little skinny".
You having traction issues? Falling between the gaps on log bridges or what??

Steve

Originally Posted by steveG

Interested in why you consider the 235's a "little skinny".
You having traction issues? Falling between the gaps on log bridges or what??

Steve

strugling for traction a little though I put that down two the factory AT's

main think is, even with pressures dropped down (25PSI) i find that I am sinking in the mud where friends in larger heavier 4wd's are not who have wider tires AKA 265's and 285's (a few also ahve 315's)
maybe its just all in my head, the 235's seem fine up the beach at 20-25PSI though a bit iffy in the softer stuff though.

did a little reading around, seems it could also be the traction control that is causing my issues not the skinny tires?

Leroy.

Hello

The 285s aren't legal fitment on 7" rims and will rub on the inner spring perches and front arms increasing the turning circle.

If you want a little more and aren't too bothered by rolling diameter increase then look to the 255/85-16 sizes these are about perfect for a Defender in height and width although they are 33.3" high so without seeking 'approval' they are legally not a 'non certified' modification.

If you are wishing to go a little wider, I would recommend sticking with the 265-75-16 (may rub still, depends where your vehicle was set up factory).

Going too large width wise will penalise you a lot for fuel economy and drag.

Avoid the trend if you can to go too wide, its more about looks than capability.

Originally Posted by Leroy_Riding

strugling for traction a little though I put that down two the factory AT's

main think is, even with pressures dropped down (25PSI) i find that I am sinking in the mud where friends in larger heavier 4wd's are not who have wider tires AKA 265's and 285's (a few also ahve 315's)
maybe its just all in my head, the 235's seem fine up the beach at 20-25PSI though a bit iffy in the softer stuff though.

did a little reading around, seems it could also be the traction control that is causing my issues not the skinny tires?

Leroy.

25psi in a lightly loaded Defender isn't that low a pressure - I would typically go 16psi front, 22psi rear in my 110 at GVM for any decent mud and then go lower from there depending on conditions.

I've run down as low as 6psi in the front in super soft sand - no dramas (particularly on factory alloys which have a far more agresdive safety bead than aftermarket steelie) just don't go fast or turn hard.

Also keep in mind that low pressure tyres heat up and make pressure - 18psi in the morning can be 24psi by lunch - that's 33% increase in pressure which is massive - remember its not the psis it's the percentage change in pressure you need to be focusing on as it is a better indicator of tyre foot print. It's all about foot print - the longer the longer the better!