Putting thicker tires on the rears.
12-21-2018, 03:09 PM
#1
Super Member
Thread Starter
Putting thicker tires on the rears.
I am getting close to new tire time (rears only) and was wondering if it’s a good idea to try thicker than stock like maybe 40+ if it will accommodate? Has anyone tried this? If so how is it? I was hoping for better traction and softer ride in the back. Also has anyone tried one of the staggered front and rear setups like on the new c63s coupe?
12-23-2018, 07:42 AM
#2
Senior Member
To keep the ratio the same if you go for a higher profile you have to go for a narrower tyre in order to keep all the sensors aligned.. So you will get a softer ride, but less traction.
I assume you have an SE model then, as the Sport models have staggered setups as standard, at least here in Europe.
I assume you have an SE model then, as the Sport models have staggered setups as standard, at least here in Europe.
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Dnasty (12-23-2018)
12-23-2018, 04:18 PM
#3
Super Member
Thread Starter
To keep the ratio the same if you go for a higher profile you have to go for a narrower tyre in order to keep all the sensors aligned.. So you will get a softer ride, but less traction.
I assume you have an SE model then, as the Sport models have staggered setups as standard, at least here in Europe.
I assume you have an SE model then, as the Sport models have staggered setups as standard, at least here in Europe.
Also I have the sport with staggered width tires. The staggered setup I was talking about was putting larger diameter wheels on the back as well as wider. I’ve seen these on the amg s coupes.
12-23-2018, 05:18 PM
#4
Super Member
More width and/or a higher sidewall aspect ratio will help with traction, but a softer rubber compound makes the biggest difference. Ideally, improve all 3 of these while obeying the following:
The front and rear tires need to be close in overall diameter (height) to avoid problems with ABS/ESP. Generally up to a 3% difference is okay.
The formula for calculating tire height is:
(Width in mm x (2 x aspect ratio / 100)) / 25.4 + wheel diameter.
Example: 275/35R19
275 x .70 / 25.4 + 19 = 26.58" height
If height of front tire is at least (height of rear tire x .97), you should be good.
The front and rear tires need to be close in overall diameter (height) to avoid problems with ABS/ESP. Generally up to a 3% difference is okay.
The formula for calculating tire height is:
(Width in mm x (2 x aspect ratio / 100)) / 25.4 + wheel diameter.
Example: 275/35R19
275 x .70 / 25.4 + 19 = 26.58" height
If height of front tire is at least (height of rear tire x .97), you should be good.
The following users liked this post:
Dnasty (12-23-2018)
12-23-2018, 07:00 PM
#5
Super Member
Thread Starter
More width and/or a higher sidewall aspect ratio will help with traction, but a softer rubber compound makes the biggest difference. Ideally, improve all 3 of these while obeying the following:
The front and rear tires need to be close in overall diameter (height) to avoid problems with ABS/ESP. Generally up to a 3% difference is okay.
The formula for calculating tire height is:
(Width in mm x (2 x aspect ratio / 100)) / 25.4 + wheel diameter.
Example: 275/35R19
275 x .70 / 25.4 + 19 = 26.58" height
If height of front tire is at least (height of rear tire x .97), you should be good.
The front and rear tires need to be close in overall diameter (height) to avoid problems with ABS/ESP. Generally up to a 3% difference is okay.
The formula for calculating tire height is:
(Width in mm x (2 x aspect ratio / 100)) / 25.4 + wheel diameter.
Example: 275/35R19
275 x .70 / 25.4 + 19 = 26.58" height
If height of front tire is at least (height of rear tire x .97), you should be good.
12-23-2018, 07:25 PM
#6
Super Member
Thank you for that. Any recommended brand as far as soft tires? I've had smooth ride with pirelli and michillin (of course you pay for that) are there any other brands out there? I may just opt to do as you say and put some softer tires in the back.. i'd also like to increase the tire thickness.. the fronts are 40 stock and 35 on rear would this change the ride much?
12-24-2018, 11:46 AM
#7
Member
Thanks for the reply. Sorry if this is a noob question but why would it effect the sensors (or which sensors) if I go higher profile without narrowing the tire width?
Also I have the sport with staggered width tires. The staggered setup I was talking about was putting larger diameter wheels on the back as well as wider. I’ve seen these on the amg s coupes.
now I'm also running a 2005 CLK500 Cabriolet.
Fronts are 245x30x20. I still might go to either 19 or 18's in the front when it comes around to tire time
Where are you located?
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12-24-2018, 11:54 AM
#8
Member
Thank you for that. Any recommended brand as far as soft tires? I've had smooth ride with pirelli and michillin (of course you pay for that) are there any other brands out there? I may just opt to do as you say and put some softer tires in the back.. i'd also like to increase the tire thickness.. the fronts are 40 stock and 35 on rear would this change the ride much?
I've been running sumitomo tires on most everything I've own for the last 25 years or so. Except my Acura NSX'S 1999, 2001, 2005. I think I was in love with them.
12-25-2018, 05:47 PM
#9
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E400
Hey
I have a E400 that is staggered 255/35/R18 on the rear and 235/40/R18 on the front. I am also wondering if I can go 255/40/R18 on the rear. Is this possible ?
12-25-2018, 05:56 PM
#10
Super Member
12-25-2018, 06:30 PM
#11
Super Member
Thread Starter
I'm a big supporter of Sumitomo tires. I've always had good luck with them. Why are you looking for more traction?
I've been running sumitomo tires on most everything I've own for the last 25 years or so. Except my Acura NSX'S 1999, 2001, 2005. I think I was in love with them.
I've been running sumitomo tires on most everything I've own for the last 25 years or so. Except my Acura NSX'S 1999, 2001, 2005. I think I was in love with them.
... But seriously I have the 550coupe and I think it could benefit from some bigger rear tires because of all the torque it sends back there. I also want a softer ride.
12-26-2018, 09:29 AM
#12
Member
12-26-2018, 09:35 AM
#13
Member
I might end up doing this as well. The michelins do look like the best... wondering how they stack up to the p zero pirellis because those are much cheaper. Also has anyone entertained (or done this) putting larger rear wheels on this car, I think it is one of the configs for the newer c and e coupes.
I've always wanted to try sumitomo tires, i've been using hankook on most of my benzes. Are sumitomos more of a softer tire? I want more traction because.. I like traction ... But seriously I have the 550coupe and I think it could benefit from some bigger rear tires because of all the torque it sends back there. I also want a softer ride.
I've always wanted to try sumitomo tires, i've been using hankook on most of my benzes. Are sumitomos more of a softer tire? I want more traction because.. I like traction
... But seriously I have the 550coupe and I think it could benefit from some bigger rear tires because of all the torque it sends back there. I also want a softer ride.
02-13-2019, 06:37 PM
#14
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E400
02-14-2019, 01:40 AM
#16
Member
the ride is a bit stiffer but it handles much better now.
