What size should I Use?
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Joined: Aug 2005
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From: Pacific Northwest
04 E500 Brabus Wagon
what size?
I think the 40 front and 35 rear...unless you are also lowering the car, as the gap between the fender and tire may be an issue with the lower profile, however as with any upgrades to each his own.
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Originally Posted by BENZO500
I just got a set of 19x8.5 and 19x9.5 wheels. I have a E500 sport. should I use 245/40/19 with 275/35/19 or 245/35/19 with 275/30/19 
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Originally Posted by BENZO500
The car originally came with 245/45/18. the latter choice is the exact diameter.
To calculate this: (tire width) x (aspect ratio) x (2) / (25.4) + (wheel diameter)
So, for your stock setup: (245) x (0.45) x (2) / (25.4) + (18) = 26.7"
Last edited by Grumpy666; Sep 29, 2005 at 09:56 PM.
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From: Seattle, WA
'05 E55TK, '00 Brabus/Kleemann 5.8 GCab, '05 CLK DTM
if it helps...
I'm about to install 245/35/19 and 285/30/19 on my car...that gives me .1 OD difference between front and rear - pretty optimal, although I am .1 and .4 larger than stock in the front and rear respectively.
My stock size is 245/40/18-265/35/18. That would make the upgrade close to right on...although 275/30/19 would be a closer fit for the rear --- but I like the big MEAT on the back, especially with a 10" wheel.
My stock size is 245/40/18-265/35/18. That would make the upgrade close to right on...although 275/30/19 would be a closer fit for the rear --- but I like the big MEAT on the back, especially with a 10" wheel.
Last edited by silversurfer; Sep 29, 2005 at 09:35 PM.
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From: Frisco, TX
'06 M5
For each inch you increase the diameter of the wheel above stock you need to drop the profile of the tire by 5. So if you're stock wheels are 18" and your stock tires are 245/40/18 (f) and 265/35/18 (r) and you increase the wheels to 19" you need to use 245/35/19 (f) and 265/30/19 (r). As mentioned above you can increase the width to with 275 or 285 and still not worry about rubbing as long as you've not lowered your car. If you go wider on the rear the overall diameter will be off just a little (a little bigger) and you're speed with be off accordingly, but not by much.
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From: Sydney, Australia
2017 S63 Coupe Iridium Silver
Originally Posted by BENZO500
The car originally came with 245/45/18. the latter choice is the exact diameter.
I think E500 Sport came with 245/40/18 (?), the same as E55 Front.
E500 comes with 245/45/17 as stock.
The correct diameter is 245/35/19 and 275/30/19 or if you want a little bigger, 255/35/19 and 285/30/19.
In both cases the rear is a fraction smaller than the front.
However, if you get a 10" rear wheel and over rear wheel. the exact match front and rear diameters is 255/35/19 and 295/30/19 at 26" each.
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I was mistaken about the original size tires I had. They were 245/40/17. I did however get my rims and tires installed today. I went with the 245/35/19 with 275/30/19. I used the Michellin's. It came out perfect. They ride MUCH smoother that the 18" AMG wheels I had on there with Nitto tires. amazing how much smoother and quieter these tires are. 
