Front 225/40/18 and rear is 245/45/18.

weird profile combo tbh... you bought used car?

maybe you mean 225/45 + 245/40?... 235...40 or 45 should not be a problem... BUT really you should check your rim size like I said... I dunno what is fitted and dunno any overlap... so don't want to give wrong advice

This post has been edited by dwRK: Sep 11 2020, 12:39 PM

Ya very unbalanced combo. The front is way too small in rolling diameter, very thin profile, while the rear is very tall sidewall! Difference in sidewall height is a massive 2cm! Your car must be low at nose while the rear sticking up, and the fender gaps at the front is much bigger too. Stock Merc C class should not be like that. Are you sure they're not 225/45/18 and 245/40/18??

let me check...... . Mine is local stock car ler. i dont buy recond one. I could be wrong on the sidewall 's measurement.

anyways... 235*4 is probably about same cost as 225*2 + 245*2

don't think you gonna save much... just give you some flexibility in terms of rotation if uneven wear

Yeah guys.... sorry that i got it wrong ! it should be the other way round. Yeah.....its more about able to rotate the tyres rather than cost.

Ah ok, my staggered sizes also last time were the same. Then I'd suggest you use 245/40/18 all around for better traction and slightly sharper front end turn in. But in order to rotate you'd still need to dismantle the tires from the rims to switch them because your rims are staggered sizes, so still not as convenient.

You may always find the recommended tyre size on the driver's seat side door. There have a sticker beside the door of your driver seat, just refers to there.

You also may refers to this website https://tiresize.com/tyre-size-calculator/ and find your tyre size, as long as not more than 3% is acceptable.

Why u not follow stock car tyre profile?. and believe strangers people on internet instead. some model indeed they design like that lo. Must be got a reason why they design like that lo. if u belip random people everywhere means u belip them more compare to mercedes engineer.

Maybe if different size rotate to left right only instead of cross it to front like ordinary cars.

Chill dude. Suddenly so harsh. lol. although somehow agree its always the best to follow factory fitted setting.

Another thing to check is what are your exact rims width? If the front is only 7.5jj then you can only fit 225 tires and cannot fit 245. You need minimum 8jj width to fit 245.

I don't know C class rims width. If BMW F30 328i/330 MSport, they also come with staggered rims size 18x8jj/8.5jj with stock fitment 225/45/18 and 255/40/18. The non sport model comes with all same 18x8jj rims with 225/45/18 only.

Some people just swallow just whatever SC tell them even without proper proof or explanation, easy meat to get con by workshops.

Lel. never know sc the one who determine car tyre size, not car engineer. kek.

I suspect front is 7.5...rear 8.5... asked ts to check full rim info many times d...

anyways ts wanna avoid 245 because of cost... so for 7.5/8.5, I think only 225 and 235

my big issues are offsets and clearances...so even if can fit 4 identical, might not be able to rotate back to front...and even if no rubbing, every time rotate handling will change

Standardising tyre width size to 225 or 235 is fine with 7.5/8.5 J .
TS really wanna to confirm actual rim size is in compliance with 7.5 - 8.5 J .

- delete -
Double post .

This post has been edited by zeng: Sep 11 2020, 09:29 PM

strangers have no vested interest... ts' job is to determine if our feedback makes sense and can be trusted

CS has vested interest to protect company's reputation...so it's almost always follow ori parts...

few years back I got into big arguments with a lyn idiot who says oem not good must go back to ori... and if I go oem means I not rich enough to drive BMW... lol

Pretty same old grandma story. Even if someone could afford the car, maintenance and what not. Do they have to accept whatever cost blindly? Lol

Thanks all bro for the feedbacks! Appreciate!

Im not argue which tyre is good which tyre is not or original tyre must use back or oem parts whats not..

Im just advice ts to stick to original specs, as he not even change rims. I believe original specs is the best. And there is a reason engineer made rear wheel bigger compare to front.

I believe some u had had hear 'If it ain't broke don't fix it'.