The BMW M2 Mod Tier List: Where Your Money Actually Belongs

You can spend £300 modifying an M2. You can also spend more than the car is worth. Neither answer is wrong on its own — it depends entirely on what you're chasing.

The short answer:

Skip low-tier styling and low-tier coilovers entirely, mid-tier covers most of what a road car actually needs, and high-tier only earns its price when it changes how the car drives, not just how it looks parked outside a coffee shop.

We put this to the test in our latest video, running every major M2 modification category through entry, mid and high-tier options, then asked two non-enthusiast staff members to guess which parts were the expensive ones. The results say a lot about where styling money is actually noticed, and where it isn't.

Watch our video on this topic:

Styling: Where Cheap Carbon Actually Costs You More

Entry-level styling means gloss black kits and unbranded carbon, some of it not genuine carbon fibre at all. Fitment is inconsistent, and these parts are prone to breaking, which tends to mean buying the same part twice or three times over. An entry splitter typically lands under £200.

Mid-tier is where a brand like FORM Industries sits. A pre-preg carbon fibre front splitter for the F87 M2 comes in at roughly double the entry price, but fitment and finish are properly sorted, and it's backed by a warranty.

High-tier is where things like TREVORA, ADRO and Alpha-N operate. These parts aren't just styling — properly designed aero adds genuine downforce. A TREVORA front splitter sits around £700, while ADRO and Alpha-N options can run into the thousands.

Our take:

Avoid low-tier entirely. We've bought it before and ended up replacing it twice over, and it drags down the overall look of the car. Mid-tier as a baseline, with one or two high-tier pieces to make the car stand out, is the sweet spot for most road cars. If track use is the priority, going all high-tier makes more sense.

When we asked a non-enthusiast staff member to walk around our M2 and point out the expensive-looking parts, the guesses were confidently wrong more often than not — the wheels got picked correctly, but so did the headlights. Styling spend is for you, not for the car park.

Air Intakes: The One Category With a Clear Winner

Entry-level means a performance panel filter, a simple drop-in replacement for the OEM airbox. Cheap, easy, and it does give a genuine gain.

Mid-tier is a replacement cone filter intake setup, from brands like MST or RamAir. Louder, with slightly stronger gains, though open filters can be more prone to heat soak.

High-tier has one name attached to it: Eventuri. The finish, fitment and sound are all in a different class, and the performance backs it up.

Our take:

This is the one part of the car where we'd go straight to the top tier without hesitation. We've fitted Eventuri across several of our own cars and would do it again every time.

Exhaust Systems: What an Untrained Ear Can Actually Hear

Entry-level covers things like a resonator delete or a de-cat backbox rebuild, both cost-effective and typically under £500.

Mid-tier means a full catback system, something like Milltek Sport, which delivers a noticeably richer tone.

High-tier is an Akrapovic system, a genuinely different sound signature rather than just a louder version of stock.

We played all three, in no particular order, to a colleague with no car background. He correctly picked the Akrapovic as the most expensive, but couldn't separate the entry and mid-tier systems from each other — which tells you plenty about diminishing returns once you're past the mid-tier catback.

Our take:

If budget allows, Akrapovic is genuinely worth it for how different it sounds. If we were spending our own money, Milltek's full catback gets the nod — noticeably better tone than a resonator delete, without the Akrapovic price tag.

Wheels and Stance: Diminishing Returns Set In Fast

Entry-level is a set of spacers — around £200, and it pushes the factory wheels out to the correct offset without changing anything else.

Mid-tier means a flow-formed wheel, something like 2Forge or Rotiform. Cost-effective relative to the transformation it delivers, since a wheel change alters the whole look of a car more than almost any other single mod.

High-tier is where wheel spend has no real ceiling. HRE and other forged, custom options can run from the thousands into the tens of thousands.

Our take:

This depends entirely on the rest of the build. A largely OEM-plus car is well served by spacers alone. A car that's already had other work done will usually need alloys to match, and a flow-formed set is the sensible starting point.

Tyres: The Mod Most People Underrate

Entry-level is a Michelin Pilot Sport 5. Mid-tier steps up to a Continental SportContact 7 or Michelin Pilot Sport 4S, for a better balance of grip and wear. High-tier, for track-focused drivers, means a dedicated semi-slick — more grip, shorter lifespan, higher cost.

Our take:

Michelin Pilot Sport 4S, in almost every case. It's the tyre that works across the widest range of use, road and occasional track day included.

Suspension: Where the Money Should Match the Use Case

Entry-level is a lowering spring such as Eibach, around £300, dropping the car with a firmer but still OEM-plus ride.

Mid-tier is a height-adjustable spring kit, similar in concept but with the ability to dial in ride height precisely. These sit just under the £1,000 mark and typically allow more drop than a static spring.

High-tier means a full coilover setup. A Bilstein B16 sits around the £2,000-£2,500 mark, while something like a Nitron R3 can run to £6,000. Honestly, a full coilover kit only makes sense if track time and lap times are genuinely a priority — on the road alone, you won't use most of what you're paying for.

Our take:

A height-adjustable kit, MMX Performance being our reference point, gets the fitment right and still drives properly on the road.

Brakes: The Category Where Factory Already Does Well

The M2 leaves the factory with genuinely good brakes, so entry-level here is simply a pad swap, something like EBC Yellowstuff.

Mid-tier adds an upgraded disc, paired with a more aggressive pad such as Ferodo or Pagid, for extra stopping power.

High-tier means a full big brake kit — six-pot calipers, new discs and pads, braided lines, the complete package. If you're upgrading brakes at any tier, it's also worth switching to a high-performance brake fluid at the same time.

Our take:

Mid-tier is the right call for most drivers — a disc and pad upgrade with better fluid covers road use and the occasional track day without overspending on a setup you won't fully use.

Interior: Small Spend, Real Difference

Entry-level covers upgraded paddle shifters or gear knobs, along with small carbon trim pieces.

Mid-tier is an upgraded steering wheel, whether that's Alcantara, a different diameter, or a full aftermarket unit — a bigger purchase, but one you feel on every drive. If you're running an early N55 M2, the factory seats are a known weak point, and Competition seats are a worthwhile step up, at around £1,500.

High-tier means carbon fibre bucket seats, a roll cage, and genuinely track-focused hardware, at which point cost climbs quickly.

Our take:

A mix of entry and mid-tier here, with Competition seats prioritised over most other interior spend.

Power and Tuning: The Category With No Real Ceiling

Entry-level is a plug-and-play tuning box from a brand like TDI Tuning, around £400, for a modest power increase.

Mid-tier is a proper ECU remap, such as a bootmod3 Stage 1 or Stage 2 depending on supporting mods like downpipes — noticeably more power than a tuning box, at a higher cost.

High-tier has no upper limit. Full motorsport-spec builds with stroker conversions exist, and the spend scales with ambition rather than any fixed ceiling.

Our take:

We run our own cars at roughly a Stage 2 level, which puts most of our builds in the mid-tier bracket.

Four Mods Worth Avoiding Entirely

• Unverified cheap carbon fibre. Poor fitment, and it tends to yellow and go dull within a year or two.
• Very cheap coilovers, in the region of £500. The factory suspension on these cars is already good — a budget coilover setup usually makes the ride worse without a corresponding handling gain.
• Straight-pipe exhausts. Excessive drone, and the neighbours won't thank you for it.
• Cheap replica wheels. Poor finish, prone to cracking, and a genuine safety concern.

Five Dream Mods, Budget Aside

If money genuinely wasn't a factor, our list for the F87/G87 M2 would be: a full carbon fibre front bumper from 3DDesign, a set of Tillett carbon fibre bucket seats (which we'd happily use daily, whatever the track-focused reputation suggests), Alpha-N front fenders, a FORM Industries CS bonnet, and an ADRO rear wing — by far our favourite spoiler on the market for this platform, and unapologetically aggressive with it.

Build It the Way You Actually Want It

An OEM-plus M2, a considered mid-tier build, or a money-no-object project car — none of these is the "correct" answer. What suits one owner won't suit the next, and that's the point of modifying a car in the first place.

You can watch the full breakdown, including the blind sound and sight tests, over on AUTOIDTV.

Check out our full catalogue of modifications for BMW F87 M2 and F87 M2 Competition.