IWannaS15 wrote:17x8 front with 17x10 rear is too big of a stagger. I think 17x8 F / 17x9 R or 17x9 F / 17x10 R is a better stagger.
Stagger determines mainly tire sizing, as wheels can carry various sizes.
Main things to consider for wheels are:
- Fitment- Weight- Tire Range- Scrub Radius / Track Modifications
Typically you want the wheel to sit inboard (higher positive offset) to avoid issues with scrub radius. Also, it should be a point to address the track width modification by going with two un-symmetrical sizings. This affects understeer and oversteer because ultimately track affects dynamic weight loading.
17x8 +2517x9 +35
235/40/17 Falken Azenis RT-615255/40/17 Falken Azenis RT-615
Excellent setup in my opinion.
IWannaS15 wrote:There is no magic power to wheel size number. But bigger wheels weigh more adn wider tires give more lateral grip. It would be much harder to drift on 17x10 wheels and 275/40 tires with your stock KA. THese guys know more about wheels/tires than me, maybe they can give you a better power/wheel size recommendation.
Larger tires have the ability to afford greater levels of grip. Meaning there is a diminishing return on tire size vs. tire grip. The lighter the car, the less aerodynamic downforce the smaller the tire you need to run, mainly because you can't adequately load the tire with enough effective weight to benefit from it's additional load capacity.
The car will be quicker in both handling and acceleration with a properly sized tire.
Two things that wider tires / wheels do to promote grip.
Increased Inertia - Requires more power to spin the wheel assembly, less power is transmitted to the ground.Increased Diameter - Affects the final gearing of the drivetrain, lessening acceleration.
Now, wider tires CAN be beneficial for a track car for a set of reasons that street cars don't encounter.