Hi all. I recently changed from r20 245/35 to r18 275/40. My suspension is stock for my track model but my new tyres are scrapping if i hit speed bumps just a little quick (which wasnt happening before). What should i do?

 

Roll the fenders or change tires.
What size wheel is it on?

 

sounds like you need to roll the rear fenders

 

Without wheel specs posted , we really know nothing. My bets are on a fender roll, it should fix the problem

 

They are 18 inch rims. I suspect they need fender rolling done inspecting my wheels this morning. Just wish i knew before getting the wide beasts thanks guys.

 

You might want to so a google search on wheel offset and backspacing to learn about wheel specs. Hopefully, you're using hub rings on all four wheels to adapt those generic wheels to your Z.

 

Proper way to post wheel size , 18x10.5 +15

Break it down 18 is the diameter, buy you know that. 10.5 is width and finally +15 is offset.

Unless you post all 3 aspects, can't do much for you.

 

Thanks for that i shoulda known haha.

Update: rolling the fenders worked proper specs were

18x9.5 +15 rear
18x8.5 +25 front

Thanks all

 

I love hearing about happy endings