W205 C300 Top Speed
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2017 Mercedes C300 Sport 4Matic AMG Pack (W205)
W205 C300 Top Speed
Hi,
The C300 is factory limited to 130Mph.
1. What kind of top speed can you get from the car if you remove the VMAX (Speed Limiter) ?
2. What kind of top speed can you get from having a Stage 1 tune (Without replacing parts, but just an ECU tune)?
The C300 is factory limited to 130Mph.
1. What kind of top speed can you get from the car if you remove the VMAX (Speed Limiter) ?
2. What kind of top speed can you get from having a Stage 1 tune (Without replacing parts, but just an ECU tune)?
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2019 C63CS
Typically the 130 mph limiter is put on cars that come with all-season tires from the factory due to their lower speed ratings. There is theoretical top speed and then there is the top speed that the tires can sustain. So if you plan to go above the factory limiter, the first order of business is to put tires with proper speed rating on the car and inflate them properly. The faster you go, the higher the tire pressure needs to be to cope with tire deflection and keep the tires from overheating. The theoretical top speed a car can achieve is purely a function of the horsepower needed to overcome the air resistance and road friction. The air resistance is a function of the coefficient of drag and the frontal area of the car, and road friction is a function of the car's weight. Here's a calculator that tells you how much horsepower is needed for a given speed based on the above parameters. You can find other calculators if you google.
http://www.wallaceracing.com/Calcula...or%20Speed.php
http://www.wallaceracing.com/Calcula...or%20Speed.php
Last edited by superswiss; May 24, 2020 at 11:20 PM.
Thread Starter
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Joined: Aug 2016
Posts: 84
Likes: 34
2017 Mercedes C300 Sport 4Matic AMG Pack (W205)
Typically the 130 mph limiter is put on cars that come with all-season tires from the factory due to their lower speed ratings. There is theoretical top speed and then there is the top speed that the tires can sustain. So if you plan to go above the factory limiter, the first order of business is to put tires with proper speed rating on the car and inflate them properly. The faster you go, the higher the tire pressure needs to be to cope with tire deflection and keep the tires from overheating. The theoretical top speed a car can achieve is purely a function of the horsepower needed to overcome the air resistance and road friction. The air resistance is a function of the coefficient of drag and the frontal area of the car, and road friction is a function of the car's weight. Here's a calculator that tells you how much horsepower is needed for a given speed based on the above parameters. You can find other calculators if you google.
http://www.wallaceracing.com/Calcula...or%20Speed.php
http://www.wallaceracing.com/Calcula...or%20Speed.php
And as for tires, that goes without saying that you need the proper tire ratings.
Last edited by nasroo7; May 25, 2020 at 08:26 AM.
Thread Starter
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Joined: Aug 2016
Posts: 84
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2017 Mercedes C300 Sport 4Matic AMG Pack (W205)
