Will this creeper fit under low-clearance vehicles?

At 38" long with a low-profile plastic deck, it works under most passenger cars and trucks. Measure your ride's undercarriage height first — if you've got inches to spare, you're good. If ground clearance is tight, test-fit before committing to the job.

How do I keep the wheels rolling smoothly?

Wipe or blow out the wheel wells after each use, especially if you're working on greasy jobs. Built-up debris or metal shavings will bog down the rolling action. Occasional spray-down with compressed air keeps them responsive.

Can I use this on uneven concrete or gravel?

Concrete shop floors and asphalt work fine. Gravel, dirt, or heavily cracked surfaces will fight the wheels and make the creeper tip-prone. Stick to smooth, level surfaces for safety and ease of movement.