305 or 315 tires
Thread Starter
Member
Joined: Mar 2019
Posts: 222
Likes: 22
From: Montreal
GLC63 AMG S Coupe
305 or 315 tires
I,m trying to decide on what wider tires I should use on my factory 10-inch wheels.
If any of you tried this combination;
305/30R21 or
315/30R21.
I'm looking at Michelis Pilot 4S.
The front will remain stock 265/40R21.
I would like to avoid any problems with the tires rubbing or needing a spacer.
My car is a stock 2019 GLC63S
Thanks for your help.
If any of you tried this combination;
305/30R21 or
315/30R21.
I'm looking at Michelis Pilot 4S.
The front will remain stock 265/40R21.
I would like to avoid any problems with the tires rubbing or needing a spacer.
My car is a stock 2019 GLC63S
Thanks for your help.
Last edited by tedboss1; Apr 10, 2024 at 02:29 PM.
Member
Joined: Sep 2023
Posts: 110
Likes: 7
GLC 63
What's up Tedboss I got yelled at by my tuner for going too much outside the % variation for the AWD system. They are very picky and car wear out the transfer case if your wheel diameter is too far off from the stock setup. Can you run a 305/30 or 315/30 and it work? Yes many have. But, longer term it could cause issues just FYI.
I'd recommend going with a 305/35/21 - it's less than a 1% difference. Check out the calculator here for changes in wheel diameter: https://www.calculator.net/tire-size-calculator.html
Our stock tire rear tire size sucks no super sticky tires (DR, autox) available in 20 or 21.
I'd recommend going with a 305/35/21 - it's less than a 1% difference. Check out the calculator here for changes in wheel diameter: https://www.calculator.net/tire-size-calculator.html
Our stock tire rear tire size sucks no super sticky tires (DR, autox) available in 20 or 21.
Thread Starter
Member
Joined: Mar 2019
Posts: 222
Likes: 22
From: Montreal
GLC63 AMG S Coupe
Bank$.
I like your recommendation for going with 305/35/21 tire.
One problem. I was not able to find this size in Pilot Sport 4S tire to match the stock front.
Is 4S even made in this size?
I like your recommendation for going with 305/35/21 tire.
One problem. I was not able to find this size in Pilot Sport 4S tire to match the stock front.
Is 4S even made in this size?
MBWorld Fanatic!
Joined: Jun 2009
Posts: 1,559
Likes: 79
2015 Challenger Hellcat, 2023 Ram 3500, 2005 E55 Wagon, 2019 GLC63s
The factory tires on the front is stretched and the tire on the rear is already bulgy at 295. You need wider wheels to run a 305 or it won't look good imo.
R.K.
R.K.
