19" AMGs Cracking

[Mikesmerc]

Hello all, on my 6th weld due to inner rims cracking when hitting potholes, currently running 255/35s on my 9.5 rims, should be 275/35s, would this 6mm in height save them I wonder. What psi should I have these at and driving with the sport button enabled does it make these more vunerable to cracking.
Any advice guys, would like to keep the 19".
Thanks
Mike
2001 CL500

 

[television]

When I had 19" on my SL I did not want the hard ride, so I went down 1 on the width from 285 to 275 and up one on the profile from 30 to 35.

So they should be 275 x 35 and side wall 96.25

You have 255 x 35 and that equals...........89.25 just 6mm as you say

275 x 40 would give you a better 110 side wall if there is enough clearance

And the pressures at 32 min

 

[Mikesmerc]

Thanks Malc, might just have to jump to 275/40s, would I have to change them all or could I get away with just the rear pair until my front ones wear out or would the difference in wheel rotation mess something up between the front and rear?
Thanks
Rgds
Mike