The Pre-Show-Season Horse Trailer Check, Before the Winter Circuit

October 27, 2026

Marion County’s show season is long. The HITS Ocala Winter Circuit runs October 22, 2026 to April 18, 2027 at HITS Post Time Farm on US Highway 27, and the World Equestrian Center’s Winter Spectacular runs January 6 to April 4, 2027, thirteen weeks of competition. A horse trailer that sat through the summer is about to haul every week for months. The short version: pull the mats, probe the floor, spin every wheel, pull the breakaway pin, test every light on the plug, and read the tire date codes. Here is how, and what each fix typically costs.

1. Floor first

Pull every mat out. Every maker we cover says to do this on a schedule, from Sundowner’s every sixty days to 4-Star’s every six months, and an off-season trailer has usually missed several.

• Wood: push a screwdriver into each board, hardest at the back and where horses stand. If it sinks in, the board is rotten.
• Aluminum: look for white powder, pitting and pinholes. Pits deep enough to catch a fingernail are past cleaning.
• Underneath: a flashlight on the crossmembers.

Flooring guides note that horse urine is acidic and rots wood and corrodes aluminum over time. A soft spot is not a show-season problem; it is a stop-hauling problem. A 4 by 8 foot section of boards runs about $290 plus lumber in published shop prices; a full wood floor about $9 to $13 per square foot. See soft or spongy trailer floor and the floor calculator.

2. Wheels and bearings

Dexter’s interval is 12 months or 12,000 miles, whichever first. A trailer that does a few local hauls a year hits the 12 months. If you cannot remember the last repack, it is due.

Jack each wheel (stands under the frame, never the axle tube, says Dexter), spin it, and rock it top to bottom. Roughness or play means the hub needs to come off. After a short drive, compare the hubs by hand: Sundowner’s manual says to feel them at fuel stops, and one much hotter than the rest is a warning. A repack runs $150 to $250 per axle. See hub hot or wheel noise.

3. Brakes

Dexter calls for brake adjustment after the first 200 miles and every 3,000 miles, and magnet inspection every 6 months. Hook up, set your controller, and do a slow test in the driveway: the trailer should pull the truck down evenly, without one wheel grabbing. Dexter says the best controller setting is just short of wheel lockup. An adjustment runs $80 to $150; new assemblies $350 to $600 per axle. See electric brakes not working.

4. Breakaway

Florida’s s. 316.261(4) requires breakaway brakes on any trailer over 3,000 lb gross that stay applied at least 15 minutes. Dexter’s storage advice is to take the breakaway battery inside and charge it at least every 90 days, a step that is easy to skip over a summer. Check the charge, then pull the pin and confirm the brakes apply, as Sundowner’s manual describes. Put the pin back right away. A switch or kit installed runs $100 to $250. See breakaway battery dead or not holding.

5. Lights

Plug in and walk around: taillamps, stop lamps, turn signals, clearance and marker lamps, plate light. Florida wants taillamps visible from 1,000 feet and stop lamps from 300 feet in daylight (s. 316.221, s. 316.234), and trailers over 3,000 lb need clearance lamps, side markers and reflectors (s. 316.2225). Dead or flickering lights are usually the plug or the ground. A single fault runs $100 to $200. See trailer lights not working or flickering.

6. Tires

Read the four-digit date code at the end of the DOT number on each sidewall: week, then year (49 CFR 574.5). Trailer tire guidance attributed to the major tire makers says replace at five to six years regardless of tread. Check pressure cold, look for sidewall cracks, and check the spare’s date too. Look at the tread pattern: Dexter’s chart reads edge wear as under-inflation and one-sided wear as camber or overload. See tires and wheels.

7. Coupler, chains and jack

Featherlite’s service chart says to check the coupler and ball for cracks, pits and flats and to replace the locking device when worn. Florida requires safety chains on every rear-hitch trailer (s. 316.530(2)). Grease the coupler, check the chain mounts, and crank the jack all the way up and down. See coupler won’t latch.

8. Ramp, doors and partitions

Lower and raise the ramp. If it has become heavy, the counterbalance is worn; Sundowner says ramp torsion springs are not user serviceable, so do not wind one yourself. Swing every door and divider and work every latch. See ramp too heavy to lift.

9. Load it right

Featherlite recommends 10 to 15 percent of trailer weight on the tongue for bumper pulls and 20 to 25 percent for goosenecks. Too little is the classic cause of sway. See trailer sways at speed.

What it typically adds up to

A trailer that needs only bearings and an adjustment might be a few hundred dollars. One that also needs a floor is more. Either way, every line is separate, so you can do the safety items before the first haul and the rest after the season. For a number, use the bearing and brake calculator, or see horse trailer repair.