What to put on a mobile tire service service-body truck
- 'Mobile tire service' or 'Roadside tire repair' across the front of the body The driver in the mirror decides in a second whether the truck behind them is help. The words tire service on the front panel and the hood settle it.
- 24/7 roadside line with the number Flats happen at 11 p.m. If you run nights, the truck should say so where a stranded driver can read it in headlights.
- Commercial / fleet / semi tires, where you do them Fleet dispatchers and owner-operators are the repeat money. 'Commercial · Fleet · Semi' tells them you carry the jack for it.
- Phone number on the rear, reflective A tire truck parks behind the customer on the shoulder. The rear faces traffic; a reflective number is both an ad and a safety marking.
- Unit number and USDOT set on the cab doors, if your truck requires them Service trucks with a compressor, tires and a crane are heavy. The compliance markings get their own clean spot on the doors.
- Brands you stock or mount, if you want tire sales If you also sell tires, a short brand line turns the roadside call into a replacement sale.
Layout by zone: driver door, side, rear
Example text for a mobile tire service business (a made-up company; 555 numbers are placeholders). Real text, so you can read it the way a customer would.
Do you need DOT numbers on a mobile tire service service-body truck?
A tire truck carries what a shop keeps on the floor: a compressor, a tire machine and balancer on an inverter or generator, jacks rated for trucks, a crane for semi tires, and a rack of spares. Truck tires run over 100 lb each, so a day's inventory is a load by itself. These rigs are built on 1-ton or medium-duty chassis whose GVWR often sits at or above the federal marking line, which is why the compliance set is part of a tire truck's lettering order. Check the door-jamb sticker and run the checker.
The federal rule (from the same verified data as our checker): name and USDOT number on both sides of the power unit from 10,001 lbs (49 CFR 390.21T(b)(2)); other triggers in the federal box below.
The federal baseline, the same in every state
- USDOT Number + Legal / Trade Name, both sides of the power unit (49 CFR 390.21T(b)(2); 49 CFR 390.21T(b)(1))
- Readable from 50 feet in daylight, no inch minimum · sharp contrast
- MC Number: recommended, not required (49 CFR 390.21T)
- Triggers: 10,001 lbs or more · placard-level hazmat · 9+ passengers for hire · 16+ passengers
Verified 2026-07-23 · next review 2026-10-21
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Recommended set for a mobile tire service business
Mistakes mobile tire service owners make with vehicle lettering
- Nothing on the front. The customer sees you in the mirror first; a hood or front bumper line saying TIRE SERVICE is worth more than a second logo on the side.
- Non-reflective rear lettering on a truck that works shoulders at night. Reflective on the rear is a safety choice as much as an ad.
- Hiding the USDOT markings inside a wrap collage. Enforcement wants to read the number in a contrasting color from 50 feet.
- No commercial message. Passenger-car flats are one-offs; fleets call every week.
- Different lettering on each truck in the fleet. Dispatchers and customers should recognize unit 2 as the same company as unit 5.
Mobile tire service vehicle lettering FAQ
Does a mobile tire truck need a USDOT number?
Often, because tire service bodies are heavy and the federal rule is a weight rule. If your truck's GVWR (or truck plus trailer) is over the federal line and you cross state lines, or your state applies its own intrastate rule, the markings are required. The checker above runs the real numbers.
Should the rear lettering be reflective?
Yes, if you work roadside at night. Reflective vinyl lights up in headlights, so the number and the words tire service are readable to approaching traffic while the truck is parked on the shoulder. Standard vinyl is fine on the sides.
What goes on the front of the truck?
A short line on the hood or above the grille: TIRE SERVICE or ROADSIDE TIRE REPAIR, in reverse on the hood if you want it readable in mirrors (we cut mirror-image text on request). The company name can be smaller there.
How do you fit lettering around compartment doors and a crane?
We split the lettering into pieces that sit on each flat panel, so nothing crosses a door seam or hides behind the crane boom. Send a photo of each side and the proof shows the exact placement.
Can you do the USDOT set and the advertising lettering in one order?
Yes. The compliance set (USDOT number, legal name, any state number) is cut to the rule's size and color, and the advertising lettering is laid out around it so each stays readable on its own.
More than one vehicle?
Fleet pricing from 15 vehicles, matched layouts across every unit, unit numbers included, one proof for the whole batch.
See fleet & volume pricing →General information, not legal advice. Each rule above shows the date we last verified it against the cited source; the state agency has the final word.