Wheel Fitment 101: Bolt Patterns, Offset, and What to Check Before You Sell
A plain-English guide to wheel fitment — bolt pattern, center bore, offset, and diameter — so the wheels you sell actually bolt on.
The fastest way to turn a happy customer into an angry one is to sell a wheel that won't bolt onto their car. A render can show a stunning set of rims, but pixels don't check physics. Here's the fitment that actually matters — in plain English.
Bolt pattern (the dealbreaker)
The bolt pattern is the number of lug holes and the diameter of the circle they sit on — e.g. 5x114.3 (5 lugs on a 114.3 mm circle). If the wheel's bolt pattern doesn't match the vehicle exactly, it physically cannot mount. A 6-lug wheel will never fit a 5-lug car. This is the first thing to verify, every time.
Center bore
The center bore is the hole in the middle of the wheel that sits on the hub. The wheel's bore must be equal to or larger than the vehicle's hub. If it's larger, hub-centric rings can take up the slack. If it's smaller, the wheel won't seat — no exceptions.
Offset and backspacing
Offset is how far the mounting face sits from the wheel's centerline. Too much positive offset tucks the wheel in; too little (or negative) pushes it out for that aggressive "poke." Get it wrong and you get rubbing on the fender or suspension. Offset is where "it fits" and "it fits well" diverge.
See it on your customer's actual car
RimFit turns a photo of the car + any set of rims into a photoreal preview in seconds. Early access for US & Canada shops.
Get early access →Diameter and width
Diameter (e.g. 18", 20") and width must stay within the vehicle's safe range, accounting for brakes and fender clearance. Going bigger changes the tire you'll pair with it, which affects speedometer accuracy and ride.
The takeaway for shops
Visualization sells the look; fitment protects the sale. The best workflow confirms the customer's vehicle specs (year, make, model, trim) before a quote goes out — so you never collect a deposit on a wheel that can't bolt on. Pairing a photoreal preview with a fitment check means customers fall in love with the look and drive away on wheels that actually fit.
Show customers their car — before they buy
AI wheel visualization for tire & rim shops. Early access, US & Canada.
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