Open challenge to Weistec W4
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2014 E63 S model
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
Yes, I understand the math but that still isn’t indicative of any improvement from a TCU tune. I’ve hit 1.6x on a stock TCU and that was with Race Start which launches softer than the technique you’re using.
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2014 E63 S model
Having done about 50 runs with race start best 60' was low 1.8 and many were 1.9x. with oem pirellis. for my car 1.6 with race start was totally out of the question. New e63s getting 1.7x with race start, with variable torque split they put down the power better. TCU mod for my car I don't know if it was meant to help with the launch or simply because the clutch packs are different. The entire Driveline on our platform is not good for launch or quarter mile. Even long after the launch the power is not put down efficiently. Thats why we dont do 9s.
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From: Behind the wheel
The best or nothing
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2014 E63 S model
I installed these tires on my winter Wheels which were not staggered. After some thought and recollection of physics from over 20 years ago, it seemed to me that a staggered fitment only has aesthetic benefits. I don't think there is any difference in traction for launching. My traction issues do not happen at launch they happen at the top of first and second gear and sometimes 3rd.
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From: OC
i drive them all, fast and hard
It's because their car does not produce the claimed 1000 horsepower.
I also have a 1k hp set up for the E63. Yesterday I trapped 138 to 139mph and last year 139.5 mph. W4 cannot even beat 135mph trap because it's nowhere near 1000hp.
A 900-horsepower E63 is running faster than their "856whp" E63, that's why they will not respond.
I also have a 1k hp set up for the E63. Yesterday I trapped 138 to 139mph and last year 139.5 mph. W4 cannot even beat 135mph trap because it's nowhere near 1000hp.
A 900-horsepower E63 is running faster than their "856whp" E63, that's why they will not respond.
did u get your money back for your w3 set up u had
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2014 E63 AMG wagon
I installed these tires on my winter Wheels which were not staggered. After some thought and recollection of physics from over 20 years ago, it seemed to me that a staggered fitment only has aesthetic benefits. I don't think there is any difference in traction for launching. My traction issues do not happen at launch they happen at the top of first and second gear and sometimes 3rd.
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From: Behind the wheel
The best or nothing
I installed these tires on my winter Wheels which were not staggered. After some thought and recollection of physics from over 20 years ago, it seemed to me that a staggered fitment only has aesthetic benefits. I don't think there is any difference in traction for launching. My traction issues do not happen at launch they happen at the top of first and second gear and sometimes 3rd.
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2014 E63 S model
winter wheels werre available in square and staggered, i went with square. more tire options, easier to rotate, equal circumference front and rear, good on Awd.
As for wide rear tires: Force (friction) = weight on tire × coefficient of friction. Surface area/width is not in the equation. Wider tire means less weight per square inch of tire and less friction per square inch of rubber. This would be balanced out by more square inches. In the end you end up with the same Force.
it's extremely counterintuitive but if you do the math based on this equation the surface area of the tire is irrelevant the force of friction will always be the same if the weight of the car is the same and the compound is the same. Coefficient of friction will depend on The Compound on the road / track prep.
in real life the tire flexes and you have other things that are not accounted for by the equation I think on a street Tire those other factors would have minimal effect and I decided to trust/test the mathematics in real life and go with the square setup and see what happens. I do not feel any loss of friction. I think the equation and the theory hold up in practice even though it's totally against intuition.
as far as W3 refund I don't think any aftermarket company would allow you to return their parts even if they were falsely advertised. Even when the parts do not fit I was not able to get a refund that is another story.
As for wide rear tires: Force (friction) = weight on tire × coefficient of friction. Surface area/width is not in the equation. Wider tire means less weight per square inch of tire and less friction per square inch of rubber. This would be balanced out by more square inches. In the end you end up with the same Force.
it's extremely counterintuitive but if you do the math based on this equation the surface area of the tire is irrelevant the force of friction will always be the same if the weight of the car is the same and the compound is the same. Coefficient of friction will depend on The Compound on the road / track prep.
in real life the tire flexes and you have other things that are not accounted for by the equation I think on a street Tire those other factors would have minimal effect and I decided to trust/test the mathematics in real life and go with the square setup and see what happens. I do not feel any loss of friction. I think the equation and the theory hold up in practice even though it's totally against intuition.
as far as W3 refund I don't think any aftermarket company would allow you to return their parts even if they were falsely advertised. Even when the parts do not fit I was not able to get a refund that is another story.
Last edited by e65; May 14, 2018 at 01:03 AM.
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2014 E63 AMG wagon
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
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2014 E63 AMG wagon
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2014 E63 S model
There is zero tire slip at launch. Unless I launch harder I don't know that drag radials would be that helpful. Also Mercedes driveline can be overpowered before street tires break loose.
Our gearing makes it very difficult to run 9s. My car shifts into 5th gear well before the finish line, a tall 5th gear that's good for 175mph. How do you run a 9 second quarter mile when you're stuck in an overdrive gear for the last third of the race? Drag radials may help your start but not going to solve this problem. Also our car is heavy, drivetrain is moody, we dont have transbrake, dedicated drag suspension, weight reduction etc, it is a daily driver.
To run 9s, a bit bigger turbo, higher boost, a differential gear that allows 4th to red line at 145 mph, and a solid drivetrain +- drag radials ought to do the trick. Our approach has been to throw more horsepower at the problem.
These time slips are a call out to Weistec and for that matter and any tuner claiming 800+whp. If those numbers are legit your cars ought to run faster than this any time any place.
I've been informed on benz-boost that Weistec will take a w4 e63 to a drag strip.
Our gearing makes it very difficult to run 9s. My car shifts into 5th gear well before the finish line, a tall 5th gear that's good for 175mph. How do you run a 9 second quarter mile when you're stuck in an overdrive gear for the last third of the race? Drag radials may help your start but not going to solve this problem. Also our car is heavy, drivetrain is moody, we dont have transbrake, dedicated drag suspension, weight reduction etc, it is a daily driver.
To run 9s, a bit bigger turbo, higher boost, a differential gear that allows 4th to red line at 145 mph, and a solid drivetrain +- drag radials ought to do the trick. Our approach has been to throw more horsepower at the problem.
These time slips are a call out to Weistec and for that matter and any tuner claiming 800+whp. If those numbers are legit your cars ought to run faster than this any time any place.
I've been informed on benz-boost that Weistec will take a w4 e63 to a drag strip.
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'03 E55, Range Rover Sport Supercharged, Ducati 748R
Even though he has room for improvement on launch, he won’t get there even on tires. These cars just won’t launch hard enough. But he could easily drop a tenth off the 60ft and 2/10s off the et with better traction.
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2014 E63 AMG wagon
He's really close is all I'm saying.
