Need help with my Flatstoppers Tire Supports

[mcpp66]

I'm storing my Camaro over the winter and wanted to get it up on the Flatstoppers. I can get the rear wheels on them but what's happening up front is the car is pushing the ramps forward. My garage has a smooth concrete floor. I spent about 45 minutes trying to get the front tires on the supports. I used to have flat 50-pound weights I could have stuck in front of the supports but not anymore. It would have been nice if they would have put some rubber feet on the bottom so they wouldn't slide forward. Anyhow, anyone have any suggestions for me?

[Dubbin1]

Jack the car up and put them under it.

[mcpp66]

Didn't think of that, but it shouldn't take that much work to get my car under them. If I can't come up with another solution then that's what I'll do.

[Dubbin1]

If these are radial tires we are talking about then there really is no need for the flat stoppers. That was a problem with bias ply tires not radials.

[jpegs13]

Most tire manufacturers suggest OVER inflating a tire by a few pounds when laying a car up for extended periods of time.

From this site:Goodyear RV Tires - Tire Care: Storage Information (http://www.goodyear.com/rv/tirecare/tire_storage.html)

STORING YOUR VEHICLE WITHOUT REMOVING THE TIRES
Ideally, a vehicle in storage should be placed on blocks to remove all weight from the tires. If the vehicle cannot be put on blocks, follow these steps for tire protection:

Completely unload the vehicle so that minimum weight will be placed on the tires
Inflate tires to recommended operating pressure plus 25%. Ensure that the rim manufacturer’s inflation capacity is not exceeded
Be sure the storage surface is firm, clean, well drained and reasonably level
Avoid moving the vehicle during extremely cold weather
Move the vehicle at least every three months to prevent ozone cracking in the tire bulge area, as well as “flat-spotting” from the prolonged strain of sidewall and tread deflection
Adjust inflation before putting the vehicle back into service