VIAIR 400P-RV Portable Air Compressor Review: Is It Worth It for Truckers?

My quick take

I'll be straight with you. Strong enough for truck tires and built to keep running. Clamps right to the battery. Tires are one of your biggest costs after fuel. Running low on pressure eats tread, burns fuel and blows out at the worst time.

I don't care about fancy boxes or a long list of features nobody uses. What matters out here is simple: does it work when you need it, does it hold up to the bouncing and the heat and the cold, and is it worth what you pay? That's how I looked at the VIAIR 400P-RV Portable Air Compressor. If you already know this is the one, you can check the current price on Amazon here and skip the rest.

Watch it in action

What you get

Specs can change between versions, so double-check the listing for the exact model before you order.

What I like about it

• Truck-tire capable
• Durable
• Long hose

Those are the things that actually make a difference on a long run. A lot of drivers I talk to say the same thing: once you have one that works, you stop thinking about it — and that's the whole point. Plenty of reviews on the VIAIR 400P-RV Portable Amazon page back that up, so it's worth a read if you want more opinions.

What I don't like

• Slow on big tires
• Pricey

No product is perfect, and I'd rather tell you now than have you find out at a truck stop at 2 a.m. For most drivers these aren't deal-breakers, but they matter depending on how you run.

Before you buy

Get a gauge that reads up to at least 160 PSI with a dual-foot chuck for inside duals. For TPMS, check how many sensors it supports.

Who should buy it (and who shouldn't)

Buy the VIAIR 400P-RV Portable Air Compressor if you're one of the topping off tires without a shop. That's who it's built for, and that's where it shines. If one of the downsides above is a big deal for you, look at the other picks in Tires & Inflation — there's probably a better fit. Still on the fence? See what other drivers are saying about it — the questions section is gold.

My bottom line

The VIAIR 400P-RV Portable Air Compressor earns a 4.6 out of 5 from me. It's not about having the most expensive gear — it's about having gear that doesn't let you down when the load's on the line. For topping off tires without a shop, this is an easy one to recommend.