Carbonfiber Front lip n side skirts rims getting done in Copper Chrome n gloss black

Grill n Kit done

Has anyone else been able to run a 235/40/19 up front?
F: 8.5 ET30
R 9.5 ET45

Running 285/35/19 in the back and it looks like a 235/40/19 is the only way to maintain the 3% diameter rule.

Considering 2 sets of wheels - wondering if it'll fit stock suspension

front 18x8.5 +42 235/40/18
rear 18x10 +34 285/30/18

front 19x8.5 +38 245/35/19
rear 19x9.5 +44 275/30/19

Please let me know if there are better size tires I should consider with either options

the first set will definitely work. I ran 235/40/19 and 283/35/19.

the second set will work but will require about a 20mm spacer up front. Don’t see any problems with the rear tire.

Very nice fitment did you lower this? Also did you ever end up running the spacer in the front .. if so does it rub?

Thanks for your quick reply!

For the set that will need 20mm spacer, is that for the 18" or 19"?

These sizing are for volk te37 wheels. 18" are SAGA, 19" are m-spec. Which set do you think will be easier to resell? I've always wanted a set of these wheels, and I'm thinking of pulling the trigger but a big consideration is resale as well. It would be a non-issue if they were 5x114.3, but sadly our cars run 5x112

That's for the 19s. I went ahead and checked your tire sizes for you, and the second set will be perfect in terms of rolling diameter. Our cars require that the front and rear tires be within a 3% difference in rolling diameter. I didn't know about this when first modifying my wheels, and it basically sent the car into limp mode because of the speed sensors. The first set is a 2.8% difference. It's very close, but shouldn't be a problem. I was running a 2.7% difference at one point with no problems.

Just a few questions - The front 19" is +38, wouldn't a 20mm spacer make it +18 which would be super aggressive? I also just took a look at the thread and seems like a lot of people are running 19x8.5 fronts with +35-+40. Also, the first set only has the rear tire change and it appears to be 1.19%. Could you clarify how you got 2.8%? Just want to make sure I am not misunderstanding.

Secondly, the 3% rule, is that the total difference? I calculated that:

front 19x8.5 +38 245/35/19 has -1.36%
rear 19x9.5 +44 275/30/19 has -1.84%

Since they're both negative, wouldn't the difference between the wheels simply be 0.48% which is way under the 3% threshold.

Thanks!

First, I ran a 235/40/19 et43 with a 15mm spacer. It would not even fit on the car without the spacer. That would make it 28et. If I have a major bump the tire will occasionally hit the strut. You're adding another 10mm in width, which I assume will extend 5mm towards the strut, and 5mm towards the fender. You would 100% need a 10mm spacer just to even have it fit on the car, then 5mm to counteract the extra width you added, and another 5mm to get it farther away from the strut. 20mm spacer.

The 3% rule is in regards to the diameter of the tire. The first set, which is 235/40/18 and 285/30/18 has a diameter difference of 2.8 percent. 235's have a diameter of 25.4" and the 285s have a diameter of 24.7

The second set has a difference 1.2%, but I believe you thought I meant the 2.8% was for the 19's, but it's for the 18s.

I'm running 34.5 ET 19*8.5 with 235/35 in the front and it is flush. My rears are 48 ET 19*9.5 265/30, these could brought flush with a 10mm spacer.

As for the percentages, I can't comment suffice to say I experienced no error messages when the newbies were mounted.

I'm surprised you were able to mount them. my 43 ET would literally not mount because of the strut without spacers.

You wouldn't have gotten an error message, your tires only have a 0.8% difference.

How did you lower it and how much drop? Exactly the height I want mine and i'm running the same size wheels and tires.

Here's my 2015 E400 With Rennen CSL 3s Front 19 x 8.5 et35 245/35/19 Rear 19 x 9.5 et38 275/30/19 I have Amg Sport Pkg with factory 10mm lowered suspension <--- Fyi.

On the 19" setup that so many are using with 8.5 front and 9.5 rear wondering if you can go 10mm wider front and back on the tires or will it rub? Meaning 245/35 19 to 255/35 19 and rear 275/30 19 to 285/30 19. I currently have 19" vertini wheels 8.5" width front et33 and rear 9.5" width et38. Was hoping to get a little bit better ride, fuller tire look and more rim protection.

Heck I’m still trying to figure out if I will get 19s or 20s. I know 19s have more rubber and will protect better against potholes. But 20s look so nice. I will probably drop on bilstein b14s.

Lowered on H&R springs. I don't recall what the drop was, but it's just on the springs.

Spacers are installed in the rear to bring the tire flush with fender. I have a slight amount of rub between fender and tire, you can just see the marks on the tire from the contact. Literally would need 1mm more clearance to be OK.

Yes lowered on H&R springs.
I didn't end up running a spacer in the front. I may consider adding a 3mm or 5mm in the future to help space it out just slightly more.

Another member has almost the same exact setup as you but with spacers on the rear springs like you mentioned. It would be great if they made springs for this car that did not lower the rear as much as this seems to be an issue. Does your car have the sport suspension?

please looking to slap on a set of wheels amd heres the specs
front 19x8.5 et 32 looking to run 245/40/19
rear 19x9.5 et 41 looking to run either 275/40/19 or 275/35/19
need opinion if either those rear tires will be ok within the 3% range .

thank u all in advance.

The spacers you mentioned are for the wheels and not the rear springs correct?

For the tires, 40 ratio is too big.. 35 is much better.

As for the percentage difference, just an FYI, I've exceeded 5% without issues (RWD).

looking to have a more comfy ride lol

I want to buy Mandrus Miglia wheels for my e550 coupe and even though ive read this thread up and down for the "optimal flush offset", it appears 8.5" +35 front and 9.5" +45 seems to be optimal.
How would 8.5" +32et front and 9.5" +48et rear fit? Would the fronts protrude out of the wheel wells? I'm looking for a flush to slightly less than flush look

My fronts are on 8.5 with a 34.5 ET and on 235 tyres, and this is flush for my C207

so




so I tried the 245/40 and that was not a good ride at all for me so I got 235/35/19 In the front and the car rides beautifully and perfect offset I feel. still running 275/30/19 and there perfect im happy with look and ride comfort and wheel gap.