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A Different Tire Question

 
Old 03-21-2016, 07:27 PM
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2012 C63 with P30, LSD, and EES Supercharger, 1959 Plymouth with Viper V10 and Tremec 6sp
A Different Tire Question

I am now a senior citizen and just purchased my first MB, a 2012 C63 with the P30 package. Everything is stock but the wheels have rash and the tires are worn so I am going to get new rubber and wheels. My original wheels are the 18 inch but looking for aftermarket most are 19. My main concern is not making a rougher ride than I have now and I don't want rubbing. My question is will the thinner rubber of the 19" make it ride rougher?
For you wondering why I purchased this car I was intrigued when I found out the factory put their largest V8 in their smallest car. My first car was a new 1966 GTO so you know where my head is at. I have also had a 1968 Charger 440 RT and a Chevelle SS396 and recently installed a V10 Viper engine in an old Plymouth. The amazing thing is that the C63 can kick but on all of these cars and MB did the work for me!
Thanks for your advice
Jim
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Old 03-21-2016, 08:09 PM
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Thinner rubber will make for a harsher ride.
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Old 03-21-2016, 10:24 PM
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Keep the wheels at 18"
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Old 03-21-2016, 10:41 PM
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Thank you for the advice. I will stick with the 18's
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Old 03-22-2016, 01:51 PM
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I bought my car with factory 19" wheels, i could feel no difference in the ride quality of the cars i test drove with 18" wheels. Both use the extra load stiff side wall tires. The factory sized 18" tires have something like 5% more side wall that the 19".

I would recommend to stay with the 18" wheels even just to make it easy to find new tires as with this car you might go through them quite fast.
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Old 03-22-2016, 02:47 PM
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Welcome to the forum and congrats on your nice ride!

The thinner sidewalls will degrade ride comfort (although not much in my opinion for 19"). You can mitigate some of this by going with larger tires (trying to keep overall diameter within reason so as not to have significant difference in speedo reading). But if your only objective is ride comfort then I'd suggest sticking with 18".

Post pics when you get your new shoes on!


Originally Posted by Big Jimbo View Post
I am now a senior citizen and just purchased my first MB, a 2012 C63 with the P30 package. Everything is stock but the wheels have rash and the tires are worn so I am going to get new rubber and wheels. My original wheels are the 18 inch but looking for aftermarket most are 19. My main concern is not making a rougher ride than I have now and I don't want rubbing. My question is will the thinner rubber of the 19" make it ride rougher?
For you wondering why I purchased this car I was intrigued when I found out the factory put their largest V8 in their smallest car. My first car was a new 1966 GTO so you know where my head is at. I have also had a 1968 Charger 440 RT and a Chevelle SS396 and recently installed a V10 Viper engine in an old Plymouth. The amazing thing is that the C63 can kick but on all of these cars and MB did the work for me!
Thanks for your advice
Jim
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