C450/C43 Wheel Fitment Guide
I would not buy either of those brands as I have never heard of them. I would not be surprised if they weigh upwards of 30 lbs/ea for the appropriate size for this car.
I will soon be back from holiday and able to call some suppliers for additional information.
19x8 et30, 235 40r19
19x9 et44, 265 40r19
Or
19x8.5 et35, 235 40r19
19x9.5 et50, 265 40r19
?
Thanks for your time.
19x9 et44, 265 35r19 this is definitely better for stock suspension. almost identical to what I ran for a short time on my old red car
Note the bold, do not upsize the profile of the rear - you would be severely out of spec.
I was planning on getting new wheels for the winter. But there are obviously limited options for 18 inch wheels.
The wheel dealer suggested for me to get all four wheels 8J and ET30 (R18).
But from the Mercedes dealership I was told that for the rear, there can be 2 options:
7.5J ET44 and 8.5J ET49.
Will 8J ET30 in rear cause any problems??
I was planning on getting new wheels for the winter. But there are obviously limited options for 18 inch wheels.
The wheel dealer suggested for me to get all four wheels 8J and ET30 (R18).
But from the Mercedes dealership I was told that for the rear, there can be 2 options:
7.5J ET44 and 8.5J ET49.
Will 8J ET30 in rear cause any problems??
I'm definitely not an expert but having read this page carefully I would say a 8 et30 on the rear of a c43 would fit but look very odd against the arches as it would sit quite sunken in. It would be almost 2cm further in than your original wheels
19x8 et30 235 40r19 front
19x9 et44 264 35r19 rear.
They are mille Miglia 1015 in gloss black other colours available. They are not the lightest wheels at almost 20kg 44lbs (heavier thant the oem AMG 19) but they are wrapped in Michelin ps4 and the total cost was under £2k so I kinda budgeted the rims although they look awesome to me much more aggressive, the tyre Change from p0 run flats is amazing.
Not lowered yet I have H&R spings ready to go.
Thanks to everyone on here who continue to share there findings and help people make informed decisions.
The Best of Mercedes & AMG
Thank you so much for your help! I have been driving with summer performance Pirelli tires now and understand that is not a good thing
Thank you so much for your help! I have been driving with summer performance Pirelli tires now and understand that is not a good thing

32 on the front and 45 on the rears. The wheels I just put on were a 35 offset and I needed a 5 mm spacer. So I’m guessing you may only need a 2 mm spacer which is really small.
Last edited by paj; Dec 13, 2020 at 02:31 PM.
Your offset at +48 will only stick out 7mm more than mine at +55, you should still clear the outer fender. With height adjustable springs and negative camber you’ll be ok.
The only thing I really didn’t like about being on 20’s was it slowed down my acceleration from a standstill.
Personally, I think 19s look small on the coupe and even lowered with the spacers. So I ordered 20x8.5 30mm 20x10 48mm Vossen HF-5s. The manufacturer didn't recommend anything lower then 48 and I didn't want to take the chances so hopefully it turns out alright.
Was the ride horrible on 20s and did you keep running run flat tires? I had Michelin PS4S on my Audi S3 and those were amazing. Thinking of doing the same on this set up 235/35/20 front and 275/30/20 rear..
Last edited by pseudoamg; Dec 19, 2020 at 03:34 PM.
FWIW, I have 20x8.5 +30 front and 20x10 +50 rear Vossen HF3s with 235/35/20 and 275/30/20 PS4S tires. I ended up putting a 5mm spacer on the rear to push it out to +45 to be a bit more flush. Perfect now IMO. Lowered on H&R springs.
Last edited by toosteeley; Dec 20, 2020 at 07:44 AM.
Personally, I think 19s look small on the coupe and even lowered with the spacers. So I ordered 20x8.5 30mm 20x10 48mm Vossen HF-5s. The manufacturer didn't recommend anything lower then 48 and I didn't want to take the chances so hopefully it turns out alright.
Was the ride horrible on 20s and did you keep running run flat tires? I had Michelin PS4S on my Audi S3 and those were amazing. Thinking of doing the same on this set up 235/35/20 front and 275/30/20 rear..
I agree, I think this car looks better on 20’s. The ride wasn’t horrible at all but, that could be subjective. However, I find it rides better on 19’s, and I wouldn’t be surprised if performance is better on 19’s as well.
Either way, getting rid of the runflats was the best way to improve ride and performance on this car. I had Continental dws 06 on 20’s and Michelin Ps4s now on my 19’s. You can’t go wrong with the Ps4s. For as long as you have a tire repair kit, portable tire inflator and roadside assistance, you’ll be ok. Besides, I’ve hit a lot of potholes on both 20’s and 19’s set ups... they were really hard hits too! No blowouts, no bent rims, nothing!
Good luck with your setup!
Ironically I almost purchased the HF-3s
It was between Vertini rfs1.3 and Vossen HF-3s in 19" then I came across the HF-5s and liked the concave look. He got me a deal for $2,600 custom satin black 20's and I immediately placed the order. Can't wait to see these on my car. Going to get my calipers painted.as well.








