Short answer: read the GVW rating, and read it as a rating for the pair. On a car, ramp capacity is almost never the binding constraint. On a truck it genuinely can be, and it is the one category on this site where the rating number deserves the attention people usually waste on jack tonnage.
What a GVW rating actually means
Most plastic ramps are rated by gross vehicle weight for the pair, not by load per ramp. A 16,000 lb GVW pair is not carrying 16,000 lb: it assumes the front axle of a 16,000 lb vehicle, with the rear still on the ground. That is why the number looks so much larger than a jack stand rating and why comparing the two directly is meaningless.
The practical check is your truck's own GVWR, which is printed on the door jamb sticker. If that number is under the ramp's GVW rating, you have margin. If it is close, buy the next rating up.
Published ratings and angles
| Product | Rating | Lift height | Angle |
|---|---|---|---|
| VEVOR car ramps | 16,000 lb GVW per pair | 6.7 in | 17 degrees |
| Black Widow low-profile | 5,000 lb per axle | 3 in | Not published |
| Race Ramps RR-72-2 | 1,500 lb per ramp | 8 in | 6.8 degrees |
| Powerbuilt 620471 Unijack | 3 ton per unit | 11 – 21 in | Not applicable |
The Race Ramps row is there as the warning. They are the best ramps we cover for a low car and the wrong tool for a truck: 1,500 lb per ramp is a per-ramp figure and it does not stretch to a pickup axle.
Where a truck breaks the assumptions
Tire width
A wide truck tire can overhang a narrow ramp track, which concentrates load at the edge of the ramp instead of across it. Check the tread width you are running against the ramp width before buying, particularly if the truck is on oversized tires.
Ground
A heavier vehicle punishes an imperfect surface much harder. Plastic ramps want flat, clean, dry concrete. On a sloped driveway or loose asphalt the ramp's base grip is doing more work than it was designed for — the gravel and soft ground page covers the same problem for jacks.
Clearance, in the other direction
A stock truck has plenty of ground clearance, so the steep 17-degree incline that troubles a sports car is irrelevant. If the truck is lowered or has a front air dam, that reverses — and the 3 in Black Widow ramps become a clearance aid rather than a service ramp.
When to skip ramps entirely
For an oil change or a transmission service, ramps are faster, cheaper and more stable than a jack and stands. For brakes, suspension, or anything else with a wheel off, they are the wrong tool and no rating fixes it. See floor jacks for lifted trucks and jack stands for trucks for the other half of the kit.