20" vs 21" AMG wheels?




My main reasons for preferring the 21" is both aesthetic, and also the fact that the rear tires are wider (315 vs 275). I can probably live with the aesthetic.
If I go with the 20" AMG twin spoke wheels, would I notice any loss in lateral traction/cornering grip versus the 21s? Or would the driving experience be similar but the 20s have better ride quality?
Also if I were to buy the 21" wheels later (either multi spoke or double-spoke), what do you think the cost recovery would be if I sold the 20s with tires?
Last edited by stealth.pilot; Jan 18, 2020 at 05:38 PM.
My main reasons for preferring the 21" is both aesthetic, and also the fact that the rear tires are wider (315 vs 275). I can probably live with the aesthetic.
If I go with the 20" AMG twin spoke wheels, would I notice any difference in lateral traction versus the 21s?
Also if I were to buy the 21" wheels later (either multi spoke or double-spoke), what do you think the cost recovery would be if I sold the 20s with tires?
I thought you couldn’t wait and buying that BMW?




I have a one month car rental till feb 5th so that’s the deadline. If I find a GLE by end of month I’ll do GLE otherwise X5 as fall back.
Last edited by stealth.pilot; Jan 18, 2020 at 04:15 PM.




My main reasons for preferring the 21" is both aesthetic, and also the fact that the rear tires are wider (315 vs 275). I can probably live with the aesthetic.
If I go with the 20" AMG twin spoke wheels, would I notice any loss in lateral traction/cornering grip versus the 21s? Or would the driving experience be similar but the 20s have better ride quality?
Also if I were to buy the 21" wheels later (either multi spoke or double-spoke), what do you think the cost recovery would be if I sold the 20s with tires?
The 20s should be pretty marketable. Do you live where you need Winters (add to your profile)? You could use them for that.




i was a little concerned about that.
happy to swap wheels and give you the $1000 option price back!
I'm sure once I see the 21s in person, I'll be bummed.
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Another reason I don't like the 20" setup.









As far as 20’s vs 21’s....IMO it’s a matter of personal preference (aesthetics) rather than performance. Larger tires might be more prone to hydroplane in heavy rain. The 21’s will cost more to replace-there will be fewer replacement tire options-they won’t last as long-but we didn’t buy a Mercedes to worry about a few bucks.








from the chart, 21" rear width is 11" +49
for 20", you have either 8.5" +42 or 9" +44
If we extend the width of the 20" to 11" while maintaining the outboard boundary (which means all the widths go to the inside)
8.5" +42 would need 2.5" (63mm) inside, effective offset would become +75
9" +44 would need 2" (51mm) inside, effective offset would become +69
So even with the more aggressive 20" setup, the rear wheels are more inset by 20mm, which is almost 0.8". that is a lot by wheel offset standard. and this is even worse if the car has the AMG appearance package where there are rear fender flares.
I have seen GLE350 with AMG appearance package but with 20" wheels, the look of the rear wheel setup is very different than the 21"




from the chart, 21" rear width is 11" +49
for 20", you have either 8.5" +42 or 9" +44
If we extend the width of the 20" to 11" while maintaining the outboard boundary (which means all the widths go to the inside)
8.5" +42 would need 2.5" (63mm) inside, effective offset would become +75
9" +44 would need 2" (51mm) inside, effective offset would become +69
So even with the more aggressive 20" setup, the rear wheels are more inset by 20mm, which is almost 0.8". that is a lot by wheel offset standard. and this is even worse if the car has the AMG appearance package where there are rear fender flares.
I have seen GLE350 with AMG appearance package but with 20" wheels, the look of the rear wheel setup is very different than the 21"




If you look at this picture you can see the inset of the rear wheel is horrible.
Obvious rear wheel inset stance issue
Last edited by bkdc; Jan 23, 2020 at 10:18 AM.
With that said, if I was being more practical, I would be purchasing a Kia instead of a MB.




I have a friend with a Mercedes and 21’s that hit a pot hole in remote Southern Nevada and blew two tires and bent a wheel. He spent 6 hours getting a tow to a town with facilities to make the repair. They ended up flying home and left the car for about 2 weeks while they found the only matching wheel in the US, the tires weren’t quite as bad. That’s probably a worst case example but it could have been worse if he hadn’t been 125 miles from Vegas or the wheel had to ship from Europe. He figured he was out over $5000 counting just his out of pocket expense and the better part of 3 days.
This thread was eye-opening. If I understand correctly, the only way to be able to rotate all 4-tires (without removing the tires from the rims), is to get a vehicle with 19" wheels? If you get the 20'"wheels, the tire size is the same but the rim offsets are different (different RT distances), and if you get the 21-22" wheels both tires and rims are different.
That's nuts, is there anyway to get Mercedes 20" rims that have the same tire & rim offsets so you can rotate all 4 tires without removing the tires from the rims...and suffering the inevitable damage to the rims from rushed tire techs? Anyone know if you can special order if you do a custom build?




This thread was eye-opening. If I understand correctly, the only way to be able to rotate all 4-tires (without removing the tires from the rims), is to get a vehicle with 19" wheels? If you get the 20'"wheels, the tire size is the same but the rim offsets are different (different RT distances), and if you get the 21-22" wheels both tires and rims are different.
That's nuts, is there anyway to get Mercedes 20" rims that have the same tire & rim offsets so you can rotate all 4 tires without removing the tires from the rims...and suffering the inevitable damage to the rims from rushed tire techs? Anyone know if you can special order if you do a custom build?
Edit- Or have the Dealer do it at first service interval.
Last edited by Ron.s; Jan 26, 2020 at 11:57 AM.




This thread was eye-opening. If I understand correctly, the only way to be able to rotate all 4-tires (without removing the tires from the rims), is to get a vehicle with 19" wheels? If you get the 20'"wheels, the tire size is the same but the rim offsets are different (different RT distances), and if you get the 21-22" wheels both tires and rims are different.
That's nuts, is there anyway to get Mercedes 20" rims that have the same tire & rim offsets so you can rotate all 4 tires without removing the tires from the rims...and suffering the inevitable damage to the rims from rushed tire techs? Anyone know if you can special order if you do a custom build?
As I have opined before, I don't think lack of rotation is a big deal. My last 4 BMW M3/M4s all had staggered setup. You may need to replace one end before the other, but that is okay. And the all wheel drive does even out wear slightly, as opposed to my M4.


