I'm currently on 19 inch aftermarket wheels and planning to order a new set of wheels for the new year. Having a dilemma between 19s or 20s so would like some feedback on ride quality compared/handling compared to 19s from those that have 20s on a sedan.
Current offsets are 19x9.5 +35/19x10.5 +54, would these offsets work without issue on 20s and 30 profile tires with eibach pro springs?

 

Probably not going to be too helpful, but here is my story. And it's pretty short. Lol. Mt E53 cam with 20 in with runflat P Zeros. My winter set up is 19 in with regular Vredstein winter tires ( not RF) . My car rides so much better! I will likely switch to non runflat 20's in the spring. Like Michelin PS 4S. Anything will ride better than those runflats. 19 vs 20, not really sure if that extra 1/2 in of sidewall matters. Probably does, but I like my AMG 20 in wheels so will use them. I don't go to track because they don't allow cabs , so on the street, not sure 20 would handle so much better than a 19. Looks...so darn close. I don't really love the look of super low profile though. .

 

I have 20's and no real issue ... the car ride stiff to start with and didn't really notice a difference to be honest

 

Thanks for the feedback. Think I'm gonna try and borrow a set of 20s and see how it is before I make a decision.

 

I also think the difference is negligible and also comes down to the tires. In terms of handling, larger wheels reduce the likelihood of the tire rolling over its sidewall during hard cornering, but with the weight farther away from the center they have higher mass inertia. Takes more effort to rotate them. A good compromise is the staggered setup that the coupes use. 19" in the front and 20" in the rear. This way you don't have the mass inertia penalty in the front for a more responsive steering, but the rears have a better contact patch.

 

Appreciate the more technical info, your always very knowledgeable.
I guess I'll also give staggered a try as well.