They may be wider but the profile ratio is different. If there was any difference in the diameter of the whole wheel then the speedo would have to be recalibrated.Kleynie wrote: ↑Sun Oct 01, 2023 2:34 pmThat’s not strictly true though as 20” and above are wider and therefore fill the arches more than the smaller diameter wheels.Bluesnose1812 wrote: ↑Sat Sep 30, 2023 8:01 pmIt's an optical illusion. The diameter and circumference of 18,19,20 and 21 wheels and tyres is the same. The only difference is the tyre wall thickness
21" vs 20" wheels
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- Posts: 1661
- Joined: Sat Sep 18, 2021 1:16 pm
- Location: Worcestershire
Currently
S|Leather|Air Susp|Chrono |Surround Camera|BOSE|14 way | AILPG |
http://www.porsche-code.com/PPSV6RD5
Next Project 4 March 2025
https://configurator.porsche.com/porsche-code/PR6MH479
S|Leather|Air Susp|Chrono |Surround Camera|BOSE|14 way | AILPG |
http://www.porsche-code.com/PPSV6RD5
Next Project 4 March 2025
https://configurator.porsche.com/porsche-code/PR6MH479
Yeah I know the rolling diameter is the same, what I’m saying is the wider wheels fill the arches more because they are wider and sit closer to the wheel arch. This is why cars that came with 20” and above have the little black arch extenders/protectors.Bluesnose1812 wrote: ↑Sun Oct 01, 2023 6:54 pmThey may be wider but the profile ratio is different. If there was any difference in the diameter of the whole wheel then the speedo would have to be recalibrated.Kleynie wrote: ↑Sun Oct 01, 2023 2:34 pmThat’s not strictly true though as 20” and above are wider and therefore fill the arches more than the smaller diameter wheels.Bluesnose1812 wrote: ↑Sat Sep 30, 2023 8:01 pm
It's an optical illusion. The diameter and circumference of 18,19,20 and 21 wheels and tyres is the same. The only difference is the tyre wall thickness
June 2017 Macan GTS in Carmine red with 21” gloss black sport classics, GTS leather package, Air, PASM, PDLS+, pano roof, Sports Chrono, 18 way seats, BOSE, surround view, heated seats front and rear, carbon side blades and carbon interior package.
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- Posts: 1661
- Joined: Sat Sep 18, 2021 1:16 pm
- Location: Worcestershire
I see where you're coming fromKleynie wrote: ↑Sun Oct 01, 2023 9:00 pmYeah I know the rolling diameter is the same, what I’m saying is the wider wheels fill the arches more because they are wider and sit closer to the wheel arch. This is why cars that came with 20” and above have the little black arch extenders/protectors.Bluesnose1812 wrote: ↑Sun Oct 01, 2023 6:54 pmThey may be wider but the profile ratio is different. If there was any difference in the diameter of the whole wheel then the speedo would have to be recalibrated.
Currently
S|Leather|Air Susp|Chrono |Surround Camera|BOSE|14 way | AILPG |
http://www.porsche-code.com/PPSV6RD5
Next Project 4 March 2025
https://configurator.porsche.com/porsche-code/PR6MH479
S|Leather|Air Susp|Chrono |Surround Camera|BOSE|14 way | AILPG |
http://www.porsche-code.com/PPSV6RD5
Next Project 4 March 2025
https://configurator.porsche.com/porsche-code/PR6MH479
I have 21" Spyders with air. I don't regret it even when cleaning them.
Go with what you want, everyone has their own opinions, .
Your'e money your choice.
If I'd listened to half the people on here I wouldn't have the car I've got today
Go with what you want, everyone has their own opinions, .
Your'e money your choice.
If I'd listened to half the people on here I wouldn't have the car I've got today
Before I got the new S I had a 2nd hand 69 plate S on 19" alloys.
It was like riding on a bouncy castle. Granted it certainly smoothed the pot holes out and uneven roads.
Prefer the ride on my new S with 21" and Air, far better.
It was like riding on a bouncy castle. Granted it certainly smoothed the pot holes out and uneven roads.
Prefer the ride on my new S with 21" and Air, far better.
I'm sure the half you did listen to were a help though
Macan S MY 2023
For looks I'd choose 21's, we had 21's on our previous Q7 and it had many many many refurbs over the six years we owned it. On air, the ride was fine.
Our Macan is also on air as well but I chose 20's this time and so far so good. Ride is great. Handling is plenty sharp, very impressed and my car is a 997.2. If only I drove the Macan it it would probably have 21's for looks but its so much less stressful with 20's and the extra sidewall for both me and the wife
Spiders are very slow to clean though even with a ceramic coat, wouldn't choose them again.
Our Macan is also on air as well but I chose 20's this time and so far so good. Ride is great. Handling is plenty sharp, very impressed and my car is a 997.2. If only I drove the Macan it it would probably have 21's for looks but its so much less stressful with 20's and the extra sidewall for both me and the wife
Spiders are very slow to clean though even with a ceramic coat, wouldn't choose them again.
2015 Macan SD
2010 997.2 4S
Gone: 1998 996 3.4 Cab, 1999 986 Boxster 2.7
2010 997.2 4S
Gone: 1998 996 3.4 Cab, 1999 986 Boxster 2.7
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- Posts: 144
- Joined: Fri Aug 23, 2019 10:50 pm
I had 20” with air and now have 21” with air
The ride on both is the same to me (and very good at that)
The 20” were much more forgiving on the kerbs but still not infallible
The 21” look much better to me are not forgiving at all but I have surround cam on this latter car which massively helps mitigates the risk
In conclusion I’d go 21” with surround cam and have your cake and eat it!
The ride on both is the same to me (and very good at that)
The 20” were much more forgiving on the kerbs but still not infallible
The 21” look much better to me are not forgiving at all but I have surround cam on this latter car which massively helps mitigates the risk
In conclusion I’d go 21” with surround cam and have your cake and eat it!
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