Thread: D4 19inch COOPER Zeon LTZ 255 55 19

I have been using mine for a month now, mainly around town, and some highways, and one day on a short 4WD course. I found the ride to be instantly better in terms of the stiffness the sidewalls have when cornering hard, and no noticeable noise increase at all either around town or on the highway, and I like driving without the radio/CD on.

Definitely a nice tyre so far!

I drive my LTZ at 40psi cold on the black top. No problems after 6,000kms. Did some off road in the Brindabella's yesterday. Took them down to 25psi and was a bit concerned with the bulging sidewall (especially when resting on a small mound as looked ok when on the flat) so put them up to 30psi. Went really well over some shaley rocks. I was reminded though that theses tyres are passenger tyres and not light truck, despite the "LT" with no ply. Driving the Oodnadatta track next week and plan on running them at about 28psi.
Cheers

Originally Posted by LGM

Hi Landoman,

In answer to your question, I run my Cooper Zeons at 34psi on the front and 38psi on the rear which is a couple of PSI above the recommend pressures on the door sticker. Oh, and I have rotated all 5 tyres at twice in the 21,000ks travelled thus far.

LGM

Can I ask ....why 2 lbs more front and back .......i have always ran my OEM wranglers as per the labels ................is there a reason for the little extra on the coopers ?

Doesn't the label on the door state to put more in the rear tyres??

+1 for 34/38 cold front/rear on road. Early days yet but off-road have been running at 34/38 hot which was taking about 4psi out. Seems to work ok - noticeable increase in grip but not much bulge in the sidewalls and no damage. Will probably drop a little more as I gain confidence in the tyres and the 19" rims.

Originally Posted by landoman

Can I ask ....why 2 lbs more front and back .......i have always ran my OEM wranglers as per the labels ................is there a reason for the little extra on the coopers ?

Generally speaking, manufactures aim for comfort when specifying tyre pressures. Adding a few pounds will usually improve handling and grip levels on bitumen. Generally the opposite is true on dirt.

Cheers,
Jon

Landoman

Wot Jon3950 said (the second bit)!

Wear across the tyre tread/s seems even to me.

LGM

Had the coopers fitted yesterday ......and the fitting shop set them at 40 psi ....front and back .....they said this would be better for wear on the bitumen they also said could put a few more lbs in the back ....they feel good on the road .....but would take that pressure down on a good stoney run like the oonadatta track .......and it looks like from above posts 28 looks a good number for that right ?

Originally Posted by landoman

Had the coopers fitted yesterday ......and the fitting shop set them at 40 psi ....front and back .....they said this would be better for wear on the bitumen they also said could put a few more lbs in the back ....they feel good on the road .....but would take that pressure down on a good stoney run like the oonadatta track .......and it looks like from above posts 28 looks a good number for that right ?

Hey Landoman,
That's also what I was advised by the fitter. At the moment I run them at 40 psi cold on the bitumen but plan on running them at 30 psi hot (or 26 cold) on the Oodnadatta. Will let you know how they went in about 4 weeks when I get back.
Cheers