hello, i am c200 with amg package only, the orignal wheel set is 225/45/r18 f, 245/40/r18 rear.
i have installed 245/35/19 x 4 with 8.5j Rays G25 19 inch wheel, I feel the handling is not as sharp as original set up, but of course, the wheel is much lighter than before. about 9kg per wheel only.

Therefore i consider to change it to
225/40/19 Front, 245/35/19 R

or 235/35/19 F, 245/35/19 R?? (may i know the tolerance of Front, rear circum difference)

Or any other suggestion, i want to improve our handling for this changes. (not used to 245 width tire on front)

Also for 225 to 8.5 J, may i know which brand of tyre with have a tire protector, so that it looks not so stretch... I had tried PSS before on our previous car 225 on 8.5j, any other suggestion too.

Thanks for comment.

 

The tire sizes you have now are good. What you might wanna do is get some spacers instead, if you still have an allowance without sticking out of the fenders. You might also try changing tire pressures and not go by what is recommended on the gas filler gap or b pillar, since you've changed the oem wheels. Handling can be subjective, since it depends on your driving style and preference. Trial and error, and a lot of road testing. Good luck!

 

i have add 5mm spacer on the Rear in order to have better looking. the offset is 45mm.

thanks for your help, i will try to bump up higher pressure on the rear or lessor pressure on the front, to see it can improve the handling or not. Or as it is square set up, 4 wheel need to be identical pressure.