What Are Forged Wheels? Performance, Weight, Strength & Refurbishment
A practical guide to forged wheels: how they’re made, forged vs cast vs flow-formed, benefits, and when refurbishment is (and isn’t) safe.
Read the guide
If you own a set of genuine split rims, refurbishment is almost always worth the investment. Unlike standard one-piece alloys, split rims must be treated with care during refurbishment: it is a precision process — not something for DIY shortcuts.
Split rim wheels — also known as multi-piece or 3-piece alloys — are iconic in the world of performance cars, classic builds, and high-end custom projects. But what actually makes them different, and when should you consider refurbishing a set?
Whether you’ve just picked up a tired set of BBS RS wheels or you’re curious about how split rims work, this blog breaks down the essentials.
A split rim is a type of alloy wheel constructed from two or three separate components:
The face of the wheel
The rear section
The piece that bolts to the hub
These parts are bolted or riveted together using specialised hardware. Depending on the design, they may also be sealed with RTV silicone or a rubber gasket to keep the tyre airtight (for tubeless setups).
This modular design makes them highly customisable — from changing finishes to adjusting widths — but also more complex to maintain and refurbish.
Split rims aren’t just about looks (though they do look incredible). Their popularity comes down to several practical and performance-based benefits:
Mix and match lip depths, barrel widths, and centre finishes.
Damage a lip? Replace just that section.
Used in racing for their balance and strength-to-weight ratio.
Split bolts and polished lips are a timeless styling cue.
Unlike standard one-piece alloys, split rims must be treated with care during refurbishment. If your wheels show signs of corrosion, leaking air, or have curb rash or faded paint, it’s time to refurbish. Wheel condition isn’t only cosmetic, either — road wheels are assessed as part of the MOT under the DVSA MOT inspection manual (axles, wheels, tyres and suspension), so a leaking or damaged wheel is worth addressing promptly.
Warning signs include:
Refurbishing split rims is a precision process — not something for DIY shortcuts. Here’s a general overview of what it includes:
That final seal matters more than it sounds: a multi-piece wheel that won’t hold air properly will keep dropping pressure, and running under-inflated affects handling, braking and tyre wear — which is why organisations such as TyreSafe stress keeping tyres correctly inflated. A split rim is only finished when it’s been reassembled to torque and confirmed airtight.
Not necessarily. Some one-piece wheels mimic the look of split rims by adding cosmetic bolts. These are often referred to as “fake split rims” and can’t be disassembled. If you’re unsure, speak to a wheel specialist before attempting refurbishment.
“We always torque split rim bolts to manufacturer specs — usually around 22–26 ft-lbs — and reseal using RTV silicone. Skipping these steps or powder coating wheels while they’re assembled is a disaster waiting to happen.”
If your refurbishment shop can’t explain their process or avoids full disassembly, it’s time to look elsewhere.
The cost depends on wheel size, the condition of each section, and the finish you choose — and because multi-piece wheels are fully disassembled and reassembled, they involve more work than a one-piece alloy. Custom colours, bolt replacements and lip repairs are quoted separately. Rather than publish figures that quickly drift out of date, we keep our current guide prices in one place, and confirm the exact figure once we've inspected your wheels.
Timing is worth planning for too: the disassembly, individual refinishing and reassembly that split rims need mean they usually take longer than a standard set. Our guide on how long alloy wheel refurbishment takes explains what to expect.
Many premium wheel manufacturers use 2- or 3-piece construction. We commonly refurbish:
Each has unique bolt patterns, torque specs, and finishes — experience matters.
If you own a set of genuine split rims, refurbishment is almost always worth the investment. Replacing a damaged wheel outright can be costly — especially if it's rare or discontinued. A professional refurb not only saves money, it also revives your wheels’ strength, style, and performance.
At Mario’s Wheel Repairs, we specialise in split rim refurbishment done properly — full disassembly, high-quality finishes, and reassembly by experienced technicians. Book your free inspection or quote today:
We can also often provide loan wheels if you need to keep using your vehicle while the work’s done — availability depends on your fitment, so ask when you book.
We restore kerbed, scratched, buckled and corroded alloys across London & Essex. See our alloy wheel repairs, full refurbishment and prices, or send a few photos for a quick quote.
A practical guide to forged wheels: how they’re made, forged vs cast vs flow-formed, benefits, and when refurbishment is (and isn’t) safe.
Read the guideHow deep dish wheels are built, the fitment measurements that decide whether a set will work, and what the outer lip and multi-piece construction mean when a wheel needs repairing.
Read the guideHow BBS forged, flow-formed and cast wheels differ, the designs that made the brand, and why construction matters when a BBS wheel is kerbed, corroded or bent and needs assessing.
Read the guide