Competition -- Mobility
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What kind of wheels do you need, if any?
If you are just going to work on the car in one spot, you won't need any wheels, so save the money.
If you have a hard surface like concrete or asphalt, get a hard caster version.
The hard casters can vary from cheap 3" steel casters to 6" phenolic caster with brakes and swivel locks like on our 2000-4000 lbs systems. Here is a comparison with our 5" caster (on the left) used on the AT+s and the 1500s with a competitors 3" steel used on their "3000 lbs." unit. Our 5" casters are rated at 500 lbs. each, plenty for the 1500 lbs. lift. All our casters bolt on so if you need to replace on, you don't have to cut it off.
Another competitor uses a big 5" rubber coated caster on their rotisserie. The only problem is the casters are only rated at 330 each. Comes up a little short.
One of the problems with the 3 legs at each end design is illustrated below. They claim they are stiffer, which may be true, but you can't move them on anything but a smooth floor, as this graphic shows.
You need a strong center tongue under the car to keeps the uprights straight up and not bending the body.
If you have gravel or need to pull up on a trailer, a rubber tired version is probably needed as above. Our AT+ and 1500 lbs series use 12" pneumatic casters, which are rated at 500 lbs each. Some competitors "3000 lbs." units, use the 10" pneumatics, which are rated at 350 lbs. each. Don't use pneumatics if you don't have to, as they cost more and they don't turn as easy.
For the heavier stuff like 2000 and 3000 lbs. series, we use a 17" diameter wheel with a 900 lbs rating as below.
