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How to Buy a Heavy-Duty Roof Cargo Platform

How to · Auto

How to Buy a Heavy-Duty Roof Cargo Platform

Load up your gear for spring road trips without draining your bank account all at once.

VoAtlas editorial Updated · 3 min read
Typical cost $600 before anything else
Across the 0% window $33.33/mo 18 months, no interest

How we got that: $600 spread evenly across the 18-month introductory window on the Citi Simplicity® Credit Card. Checked · at the bank Carry a balance past the window and the standard APR applies to what is left.

Packed cars are a drag. A heavy-duty roof cargo platform gets the bulky gear, coolers, and duffels off your seats and up top where they belong. You get your legroom back, but you also take a hit on gas mileage and wind noise once it's up there. The best time to buy is early spring, right before the summer road trip rush hits and retailers start bumping prices back up to retail.

Don't mention financing when you talk to the dealer or retailer. Negotiate the price of the platform and any mounting hardware or locks as a single out-the-door total first. Once you have the final number, you can figure out how you want to pay for it.

Remember that the intro window is a deadline, not free money. If you still have a balance left on the Citi Simplicity® Credit Card when those 18 months are up, you will get hit with interest on the remaining amount, so make sure your monthly payments actually finish the job.

The steps

  1. 01

    Negotiate the price first

    Nail down the total cost of the platform and specific mounting feet for your car before talking about how you'll pay. Walk away if the add-ons and install fees start creeping up too high. Independent rack shops often have more room to bundle parts than big box stores.

  2. 02

    Time your purchase for spring

    Buy before the summer rush when demand spikes and discounts disappear. Look for early spring sales or clearance events on older platform models. Getting ahead of the season keeps you from paying top dollar out of desperation.

  3. 03

    Spread out the cost

    If you are using the Citi Simplicity® Credit Card, you get 0% for 18 months on purchases and balance transfers from date of account opening to pay for it. For a $600 platform, that works out to about $33.33 per month over that window. Set up auto-pay so you don't miss a beat.

  4. 04

    Test the fit before your trip

    Put the platform together and mount it in your driveway a week before you leave. Check that your sunroof still opens and your hatchback clears the back of the rack. Adjusting things at home beats doing it in a gas station parking lot.

  5. 05

    Pack for wind and water

    Roof platforms expose your gear to high-speed wind and rain that regular trunk space avoids. Invest in heavy-duty waterproof bags and proper cam straps instead of stretchy bungees. Check the tightness of your mounting bolts after your first hundred miles of driving.

  6. 06

    Check the card terms before you commit

    Every figure we publish for the Citi Simplicity® Credit Card carries the date a person verified it against Citi and a link to where they checked. Intro windows and APRs change without notice, so confirm the current terms before applying.

    See Citi Simplicity® Credit Card terms →

Common questions

Will a roof platform fit my existing crossbars?

Most platforms fit factory crossbars, but you might need specific adapter clamps depending on whether your bars are round, square, or aero-shaped. Check the manufacturer fit guide before buying so you don't get stuck ordering extra parts later.

How much will a roof platform hurt my gas mileage?

Expect to lose between one to three miles per gallon depending on how much gear you stack up there and how fast you drive. Wind resistance adds up quickly on the highway, so take the platform off when you aren't using it if you want to save fuel.

Is a basket better than a flat platform?

Baskets have walls that help keep loose gear contained, but flat platforms give you more versatility for oversized items like coolers, spare tires, or lumber. If you mostly pack odd-shaped gear and duffels, a flat platform usually wins.

Can I leave the platform on my car year-round?

You can, but rain, snow, and road salt will eventually cause weathering and rust on the hardware. Taking it off for the winter months keeps it looking newer and saves you a bit of gas all year.