A single axle trailer rides on one set of wheels. A tandem axle trailer has two axles mounted close together, which spreads the load across four tires instead of two. Neither is better in every case, and buying the wrong one usually means either paying for capacity you never use or overloading a trailer that was never meant for the job. Grizzly Trailer Sales stocks both styles at its Rupert and Montpelier lots. These six factors decide which one belongs behind your truck.
What should decide between a single axle and tandem axle trailer?
1. How much weight will you actually haul?
Load weight is the first filter. Most single axle utility trailers ride on one 3,500-pound axle and carry a GVWR, or gross vehicle weight rating, of roughly 3,000 to 3,500 pounds, trailer included. Tandem utility trailers commonly start around 7,000 pounds, and equipment and dump models go well beyond that. Check the rating on the trailer’s certification label, then weigh your heaviest regular load against it.
2. Will the trailer need brakes under Idaho law?
Idaho Code ยง 49-933 requires brakes on any trailer weighing 1,500 pounds or more empty, operated from the cab and set to engage automatically if the trailer breaks away. Many light single axle trailers fall below that line. Most tandems do not, so plan on a brake controller in your truck.
3. How does it handle at highway speed?
A tandem tracks straighter and bounces less, especially in crosswinds on open stretches of I-84. Its biggest safety advantage shows up during a blowout. The second tire on that side carries the load long enough for you to pull over, while a single axle trailer drops onto its rim.
4. Where will you maneuver and store it?
Single axle trailers turn tighter, back into narrow driveways more easily and can often be moved by hand. Tandem tires scrub sideways on sharp turns, which wears them faster if you do a lot of tight work in yards or job sites.
5. What will it cost to buy and maintain?
A tandem costs more up front and doubles the tires, bearings and brake assemblies you maintain. Axle makers such as Dexter recommend servicing wheel bearings every 12 months or 12,000 miles, so a second axle adds real time and expense over the life of the trailer.
6. What can your truck and hitch handle?
Your tow vehicle sets the ceiling. Check the truck’s towing capacity, the hitch receiver’s rating and the payload left for tongue weight, which commonly runs 10 to 15 percent of the loaded trailer’s weight. A trailer that outweighs your truck’s capacity is the wrong choice regardless of axle count.
Where can you compare single and tandem axle trailers in southern Idaho?
These businesses sell or rent trailers in the region:
- Grizzly Trailer Sales
- Classic Car Sales
- Tractor Supply Co.
- Gem State Haulers
- MSS Trailers & Trucks
1. Grizzly Trailer Sales
Grizzly Trailer Sales sells new and used trailers from lots in Rupert and Montpelier, where Trell Whitehead and Matt Hope help buyers size a trailer to their truck and their loads. Inventory spans light single axle utility trailers through tandem dump, deck-over, gooseneck, car hauler and skid steer tilt models from brands such as Big Tex, Dutton, Pace American and Snake River. Seeing both axle setups on the same lot makes it easier to compare ratings, brakes and price in one stop, and financing is available for qualified buyers.
2. Classic Car Sales
A trailer dealer in the Mini-Cassia area.
3. Tractor Supply Co.
A farm and ranch retailer that carries utility trailers.
4. Gem State Haulers
A trailer rental option for those who want to try a setup before buying.
5. MSS Trailers & Trucks
A trailer and truck dealer serving southeast Idaho.
Which axle setup should you buy?
A single axle trailer makes sense for light loads, short trips and tight spaces where low cost and easy handling matter most. A tandem earns its higher price when loads climb past about 3,000 pounds, highway miles add up or a blowout at speed would be dangerous. Know your heaviest load and your truck’s limits before you shop. When you are ready to compare both on the lot, stop by Grizzly Trailer Sales in Rupert or Montpelier.
