Listed as +13.
It was −13.

01The trap

On paper, it should have fit. The real wheel was different.

A while back, a buyer in Canada asked me to source a set of BERG wheels. Clean listing from a shop, not a private seller, with decent photos.

The spec sheet said offset +13 (the number that sets how far the wheel sticks out from the car). On paper, right for his car. But the stamp on the real wheel said −13. I measured it myself — still −13.

If they'd shipped as listed, here's how it usually goes:

1. Pay for the set
2. Wait weeks
3. Open the box
4. Find wheels that don't match your order

On many cars, that's not "a little different." The tires rub, the wheels won't fit under the fender, or they won't sit right at all. And the money is already gone.

02Why it happens

This isn't a freak case.

These three are the most common. Japanese auction and store listings get built fast by people moving a lot of stock, so things slip through.

• A wrong spec (+ and − flipped, or an old spec copied over)
• A crack in the rim, welded and painted over
• Damage the listing photos don't show

Here's one I caught on a different set: a weld repair on the rim. It almost never shows up in a listing photo.

And this is the part almost nobody explains. Here's how responsibility actually works.

• Proxy serviceA service that buys for you, the kind most people use to buy from Japan. It's responsible for making the purchase, not for the wheel's condition.
• Original sellerThe auction or store seller. They're responsible for the condition. But once it ships, they're usually done.
• Shops selling their own stockThey stand behind it a bit more. But a cross-border return on a used wheel is its own nightmare.

This isn't a scam. It's just how the system works.

03How to protect yourself

Whoever you use: one thing to know, one thing to do.

1. Know this: surprises aren't rare.The number you saw in 02 isn't paranoia — it's the real number. Plan for it, in your head and in your budget.
2. Do this: put an inspection, and a way out, before it ships.Not the listing photos — the actual wheel.
   • Read the offset stamp, then measure it
   • Check the rim for welds and cracks
   • Record the real condition

04How OPUS does it

If it doesn't match, you can cancel before it ships.

1. You pay in fullBut the money isn't gone.
2. I inspect the real wheels by handI read the offset stamp, measure it, and send you photos. Inspection is included in the service fee (no extra charge).
3. If they don't match, you can cancelI refund everything you paid except 5% of the item price (the price the auction closed at). On a $1,000 set, that's $50.

See the sample inspection report ↗ for what a real one looks like.

On that BERG set, I sent him the real stamped number before anything shipped. That gap would be a problem on many cars, but −13 actually suited his car better. So he told me to ship them, and they arrived exactly as I'd described.

Here's what matters: he saw the real number and decided before anything shipped.