C450/C43 Wheel Fitment Guide
Based on what i've read, these should fit on my h&r spring lowered C43 coupe with maybe a 4mm spacer in front and 8mm spacer in the back? Theres currently Michelin winters 255/35/19 in front and 285/30/19 in the back, but i'm planning on getting the same size in summer performance tires.
Can someone just confirm that they would fit on my lowered C43 coupe, thanks
Last edited by jaydieu; Aug 10, 2022 at 02:47 AM.

You're correct that a spacer will be needed in the front, but the closest you'll find is 3mm or 5mm (go with 5mm). Although you won't NEED spacers in the rear, 8mm would visually make the fitment better on a lowered car.
The challenge with that setup however, is the tire sizes. You'll never get a 255 in the front. Also, the aspect ratios are off for our cars. The ideal tires specs would be 235/40/19 and 275/35/19 (or 265/35/19).

You're correct that a spacer will be needed in the front, but the closest you'll find is 3mm or 5mm (go with 5mm). Although you won't NEED spacers in the rear, 8mm would visually make the fitment better on a lowered car.
The challenge with that setup however, is the tire sizes. You'll never get a 255 in the front. Also, the aspect ratios are off for our cars. The ideal tires specs would be 235/40/19 and 275/35/19 (or 265/35/19).
5mm spacer making the front ET29.5 shouldn't rub either right?
5mm spacer making the front ET29.5 shouldn't rub either right?
There's much more tolerance in the rear, so yes, 295's are possible on a 10" wide rim and ET50ish offset. The challenge is matching the proper stagger in the front. Requires a number of other mods to get more than a 235 tire to fit without rubbing.
5mm spacer making the front ET29.5 shouldn't rub either right?
Regardless, I’m down to run ps4s 245 front and 275 rear, but I just need confirmation that its plug & play on an H&R lowered c43 coupe.
did you have any other mods/parts to assist dialling in your setup?
The Best of Mercedes & AMG
I originally had H&R springs on the 255/30 f, then eventually changed to H&R VTF adjustable springs up front, and kept the rears on the H&R springs. Nothing else was done to the front other than a good 4 wheel alignment.
I’ve been thinking about getting k-mac camber kits too. For now I’m keeping it as is.
Good luck with your setup!
Last edited by mo11; Aug 12, 2022 at 12:05 PM.




Correct spelling also helps the reader understand your message easier. When typing a post, this website will underline misspelled words so you see you have something to correct.
post #16 w/ pic of which part to grind out
OEM there is only Front and Rear ‘Toe’ (directional) adjustment. No Camber or Caster - essential to adjust tire contact angles, spread load more evenly to cater for other then showroom height conditions. High cambered roads, altered height, wide profile tires, curb knocks.
It’s all to do with cost cutting and ever increasing speed of auto assembly lines.
See spoiler re C450 / C43 AMG Bolt-on Kits:
AUDI to VOLVO - KMAC Experience Of Resolving OEM Suspension Shortcomings Since 1964!
On DiscountTire's site, it says that I can use either Front: 225/40R19 or 235/40R19 and on the Rear: 255/35R19 or 265/35R19 without any offset (spacers?) necessary.
My 2018 C43 isn't lowered.
I have the AMG 605 Multi-Spoke wheels:
Front:
Continental ExtremeContact DWS06
225/40ZR19 93Y XL
Rear:
Continental ContiSportContact 5P
255/35R19 96Y XL
Looking to change to the Continental ExtremeContact DWS06+ in a 235/265 setup, since I can't find the Michelin All Seasons in stock anywhere.
Could someone confirm whether this indeed would work?
Thanks!
On DiscountTire's site, it says that I can use either Front: 225/40R19 or 235/40R19 and on the Rear: 255/35R19 or 265/35R19 without any offset (spacers?) necessary.
My 2018 C43 isn't lowered.
I have the AMG 605 Multi-Spoke wheels:
Front:
Continental ExtremeContact DWS06
225/40ZR19 93Y XL
Rear:
Continental ContiSportContact 5P
255/35R19 96Y XL
Looking to change to the Continental ExtremeContact DWS06+ in a 235/265 setup, since I can't find the Michelin All Seasons in stock anywhere.
Could someone confirm whether this indeed would work?
Thanks!
There are studies that show a tire too wide for a rim actually reduces contact patch. You will have abnormal wear and you will be adding weight to each corner for less traction.
Run stock tire sizes on stock wheels.
There are studies that show a tire too wide for a rim actually reduces contact patch. You will have abnormal wear and you will be adding weight to each corner for less traction.
Run stock tire sizes on stock wheels.

My tire size (stock 19 inch)
Front: 19” 225/40-19
Rear: 19” 255/35-19
Will the rim sizes 8.5 Front & 9.5 Rear ET 35 cause any problems? Would I need spacers? Thanks!









