woody6244

I did a search and nothing cam back. So the question is since C5s have wider rear tires would you still want to have front to rear weight 50% - 50%. and changing tire size change optimum weight %. What side of the fuel tank drains first?

ErnieN85

quick answer yes 50/50 (if possible a bit more to the rear is best)

Solofast

It's all a matter of how you want to set the car up. Bigger rear tires let you use more rear roll stiffness, and you can take some of the cornering load off of the front tires and put it in the rear.

OTOH, if you upsize the fronts to a "square" setup you can add more front roll stiffness and that can work too. Lot of folks here are running square setups and after they dial the car in it works just fine.

It's all in how you want to set up the car. Remember, that looks enter into it to, and bigger rear tires are important to the stance of the car.

Bottom line is that you can make a pretty wide range of setups work, you just have to work through it and get the car balanced in terms of shocks, spring rates and roll stiffness.

In a perfect world you would size the tires for the weight distribution, and then tune the car, but there are bunches of reasons why this isn't done.

For an example, GM didn't want fatter tires on the front of the C5 because it hurt the aerodynamics and increased fuel consumption (CAFE numbers are important to every car in a manufacturers line). When they came out with the Z06 they upsized the width because the car needed more front tire, although it hurt the mileage.

To get a car to handle properly you need "enough" tire, but after that, more tire doesn't help much in increasing grip and improving handling. There is definitely a case of diminishing returns with increasing tire width.

With suspension tuning you can take cars that don't have optimum weight distributions and tire combinations, and make them go pretty darn fast, it's all a matter of getting the car balanced, and there's a range of tuning that can get the car there even if the package isn't perfect.

rfn026

Here's an article I did on corner weighting. You want to pay attention to the cross weights. They should be within a lb. or so. With the car with you in the seat. I like a half tank of gas.

http://2.bp.blogspot.com/-RDpLQX_ZNz.../Scales+2w.jpg

None of this is going to be easy you'll spend hours on this. Then hours on the alignment. Then back to the weights. Don't forget to disconnect your sway bars

Richard Newton

JVetthead

Right side tank continuously pumps to left side..
totally opposite of what it should be in my eyes.

varkwso

I agree. What were they thinking?

Mark2009

Serious winter project - could it be reversed?

Or would it be worth the effort . . . . .

braknl8

Can be done. Not sure of the effort it required so I'm no help there. But it has been done....

JVetthead

Easy solution is to run with full tanks all the time.. I need the wieght anyway and its in a good location. for TT anyway.

ratt_finkel

Here you go. I was reading this last night.

https://www.corvetteforum.com/forums...ompromise.html