Hey guys hope yall are good.
So just a little bit of background information - e89 z4 23i, use the zed as a commuter really and enjoy it over the weekends I do roughly 100miles per day so i spend hours in my car and ive noticed a few things and I wanna know if its just me - by the way Love my car to bits
!!! Anyways ive Just done a recent tyre change went from runflats to Non runflats and its been a beaut in terms of comfort, drive traction all the jazz love it I had the potenza rf and it was horrendous back breaking and just - yeah i dont know how i coped so gone to toyo proxies t1 sport on 18s and followed mr wilks tyre guide .
ive noticed a few things and I don't entirely know if I'm the only person that gets this ive messed around with psi 42 rears 37 fronts, 34 fronts 37 rears and i cant seem to understand why this is happening i genuinely dont get it. So on occasaions my car will be the smoothest thing ever goes over bumps and everything like a breeze and on other occasions itl be agony again. I take the same route so its definately not the road surface like il go over the same bumps on some days/different times and itl be fine and then the same bump and itl be backbreaking (i do avoid them all but on occasion it happens). I dont have m sport suspension ( I don't think ) and my shocks seem to be fine as far as I'm aware (will get them inspected on my next service due in a few). But surely i cant be the only one this is happening to.
Anyone experience something similar or is it just me ?
So just a little bit of background information - e89 z4 23i, use the zed as a commuter really and enjoy it over the weekends I do roughly 100miles per day so i spend hours in my car and ive noticed a few things and I wanna know if its just me - by the way Love my car to bits

ive noticed a few things and I don't entirely know if I'm the only person that gets this ive messed around with psi 42 rears 37 fronts, 34 fronts 37 rears and i cant seem to understand why this is happening i genuinely dont get it. So on occasaions my car will be the smoothest thing ever goes over bumps and everything like a breeze and on other occasions itl be agony again. I take the same route so its definately not the road surface like il go over the same bumps on some days/different times and itl be fine and then the same bump and itl be backbreaking (i do avoid them all but on occasion it happens). I dont have m sport suspension ( I don't think ) and my shocks seem to be fine as far as I'm aware (will get them inspected on my next service due in a few). But surely i cant be the only one this is happening to.
Anyone experience something similar or is it just me ?