[ruzbehxyz]

Originally Posted by di1in

I’m seeing this sort of tire wear on my Jeep Compass. Initially I thought it was an alignment issue and realigned the wheels. But it seems to be still there. Tire pressure is ok as I had installed tpms last month.

As per the photographs, I feel the tyres have hardened and become brittle. This has led to rubber being chipped off. You definitely need to change the tyres. Before that do a thorough examination of underbody, control arms, suspension and bushings, from a reputed wheel alignment shop preferably with Hunter machine and/or from ASC. Also measure the distance of the body from the ground for each tyre. This is let you know if there is any tilt in your car.

Mostly new tyres and realignment should do the trick, but it is always better to check for any abnormal symptoms or damages.

[Brishti]

Originally Posted by Traveler

Thanks. Is this also the stock size for your car. I mean what size did you originally have. I have 225/55 R18 but I am planning to downsize to 16 inch wheels and tyres as the 225/55 R18 are no good in off-road conditions. 215/65 R16 is slightly smaller then my stock size.

I had R17's and changed them to R16 alloys from bedrock edition at the dealership itself. They ordered the alloy on my behalf and it took 3-4 weeks to come. The bedrock edition alloy is black with 6.5J and is just a perfect fit for 215/65/R16.

The bedrock edition came with 225/60/R16 in stock so this size change is the best overall. Also I did not buy MOMO, etc wheels because I wanted to keep the alloys company authentic.

[Traveler]

Originally Posted by Brishti

I had R17's and changed them to R16 alloys from bedrock edition at the dealership itself. They ordered the alloy on my behalf and it took 3-4 weeks to come. The bedrock edition alloy is black with 6.5J and is just a perfect fit for 215/65/R16.

The bedrock edition came with 225/60/R16 in stock so this size change is the best overall. Also I did not buy MOMO, etc wheels because I wanted to keep the alloys company authentic.

Great choice and a very useful upgrade. Thanks for the detailed reply.

How much did the alloys cost you and can you post some pictures of the alloys.

[Brishti]

Originally Posted by Traveler

Great choice and a very useful upgrade. Thanks for the detailed reply.

How much did the alloys cost you and can you post some pictures of the alloys.

The car is with my brother for now since I exchanged my Compass with his Seltos a while back given his excessive traveling and Seltos bad crash scores.

The bedrock alloys were around 50-55k from what I recall and the tires were 10k each.

This is the pic of the said alloy

[zeng]

Originally Posted by reppy

Hi - I'm a rubber technology and formulations person. This is a purely rubber mixing issue and the compatibility of the polymers is the reason (probably due to difficult to mix polybutadiene in the formulation).

In layman's terms, it's a product defect.

Would this rubber mixing issue promotes hardening of tyre rubber, or polymers compatibility causing hardening ?

If yes, is the hardening 'accelerated'?

Or both of them has no relation with rubber hardening phenomenon whatsovever?