I'm sure this is something that varies based on a lot of factors, tire height, etc.....

Trying to figure out if my car, a C5 Coupe, has been lowered, I can't back out of my driveway without the front spoiler scraping regardless of how slow I go or the angle I take....

If I measure from right in front of the front spoiler to the garage floor, on both sides, it measures 6.5 inches....was wondering if that seems low or about right.

Thanks in advance...Nick

 

I just went out and measured both of my C5s, each measured 6". Both of them have been lowered on stock bolts.

 

Thanks, any idea how much you lowered it...

 

If you can jack it up and take a look it will be much simpler. A stock C5 has almost no threads showing on the front leaf springs. Fully lowered would be all the threads.

 

You can't fully go off of relative ride height in comparison to other C5s when discussing ride height due to the way the sub frames were constructed and how they were corner weighted against the car. As has been pointed out periodically by some individuals who originally worked on the C5, the front and rear sub frames often had minor variances out of their jigs. This often necessitated some minor variances in ride height to ensure the car was properly corner weighted to maintain adequate cornering performance (i.e., so turning in one direction would yield the same performance as turning the other way).

Roughly if your car is in the 28" to 29" height range measured from the ground to the "top" (highest) point of the fender wheel well then you're likely at OEM ride height. If you're closer to mid 27" to 27" inch then you've likely been lowered slightly. You will likely see minor measuring variances from side to side due to corner weight.

I'll say though when I first got my C5 it was at stock ride height and I would always scrape the air deflectors on my driveway regardless of angle. Only if I attacked it at a near 70 degree angle and as slow as possible could I clear it. And the grade on that driveway was not at all steep. I've since lowered it a bit. For the most part they'll hold their shape relatively well but you will see some scrape marks if you really get in under there.

 

I'm in the same ballpark, my bumper is about 6" off the ground. I'm at 26 1/8", from the ground to the top of the front wheel arch, and I lowered the car about 1 1/4" from stock. My car has the F45 suspension (can't believe I actually ordered it, hindsight is indeed 20/20), and from the factory, it looked like it had an off-road, 4X4 option......

 

This is awesome info gentlemen, just measur d and I am at exactly 27" on both sides so it looks like it has been lowered some.....

 

How much do you have to adjust the lowering bolts to get 1 inch less ride height?

I put Z51 springs on mine and it is 1/2 inch too high all around.

 

That air dam in the center section is spring loaded. I've been scraping mine for 4 years and no damage has been done.

 

This happened to me when I installed Z06 springs. Just lower it on the new spring's bolts, the springs are shaped a little different and the ride height is higher by default when you swap. Mine is now about 26.75" at the wheel arch in the front, which I'm happy with. I also replaced F45 suspension and funny story: My car had 105k miles when I got it and the shocks were completely blown.

I'm not sure if this was a property of the F45's, but there was no gas charge left in the dampers, I know because I temporarily scavenged the sensor plugs from the shocks. It turned out I learned to drive my corvette about 2 inches under stock height in the front because of the sag. So I think when F45's die they just droop completely.

 

Soon I will have to put the car on jack-stands for service. I am trying to figure out about how much adjustment it takes on the bolts to avoid having to lift the car more than once. I thought that some of might know a ball park figure.

Thanks.