RWD Owners - how do you go fast but keep straight line wheel spin down?
#41
#42
I get the physics, I took physics in University too but there is the theory and then there is the practical application. I'd suggest there is a reason that the top automotive engineers keep putting wider and larger tires on their high hp cars to maintain traction.
Dave
Dave
We we have many reasons for putting wide tires on sports cars. Some of that is for laterial grip purposes, some is because we're forced into an envelope of 19, 20, 21 inch wheels that limit the amount of sidewall we can add, some of that is looks. Generally we combat wheel spin with mechanically added grip and stickier compounds because a taller tire isn't the popular choice in other areas. But keep in mind we build the car to handle stock power levels, and not more than that; which is where these issues usually arise.
#43
This thread was focused on wheel spin, which is why I brought up this point. But you're correct in the statement that they are two different animals. A taller tire has many poor effects when rounding a corner. The muscle car era is a perfect example of that.
#44
Keep in mind you're talking to a chassis integration engineer for a major OEM as I've mentioned in many posts.
We we have many reasons for putting wide tires on sports cars. Some of that is for laterial grip purposes, some is because we're forced into an envelope of 19, 20, 21 inch wheels that limit the amount of sidewall we can add, some of that is looks. Generally we combat wheel spin with mechanically added grip and stickier compounds because a taller tire isn't the popular choice in other areas. But keep in mind we build the car to handle stock power levels, and not more than that; which is where these issues usually arise.
We we have many reasons for putting wide tires on sports cars. Some of that is for laterial grip purposes, some is because we're forced into an envelope of 19, 20, 21 inch wheels that limit the amount of sidewall we can add, some of that is looks. Generally we combat wheel spin with mechanically added grip and stickier compounds because a taller tire isn't the popular choice in other areas. But keep in mind we build the car to handle stock power levels, and not more than that; which is where these issues usually arise.
Cheers,
Dave
#45
That logic would depend completely on what PSI the tires were set to. However, assuming the 295s are at OEM spec and the 305s are 3psi below that, yes they will perform better because you've now created a larger contact patch all the way around. That being said you could just decrease the 295s 3psi and then they would be better. Since you still have to support the same load, you need the same pressure in the tires to hold up that load, and thus contact patch size is the same.
#46
R888's
__________________
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
#48
#49