Next Level Performance
September 9, 2026 • 11 min read
Our Verdict
The KW Variant 4 (V4) coilover kit is the best all-around suspension upgrade for the 2020-2025 BMW M8, with fully adjustable ride height and independent rebound and compression damping.
Want to keep the factory adaptive dampers? The KW H.A.S. height-adjustable springs are the best compromise, while H&R Sport Springs deliver a clean 1-inch drop for the lowest price. All three fit the F91 Convertible, F92 Coupe and F93 Gran Coupe, including Competition.
Shop Our Top Pick →The best BMW M8 coilovers and lowering springs transform a 4,300-pound grand tourer into a genuinely sharp back-road weapon — and this guide compares the three suspension upgrades our Tampa, FL shop recommends most for the 2020-2025 M8 (F91 Convertible, F92 Coupe and F93 Gran Coupe). With 600 hp in the standard M8 and 617 hp in the M8 Competition sent through M xDrive, the S63 4.4L twin-turbo V8 has no trouble moving this car; the factory suspension, however, leaves noticeable body roll and fender-gap on the table. Below we break down the KW V4 coilover, the KW H.A.S. height-adjustable spring kit and the H&R Sport Spring set on drop height, adjustability, adaptive-damper compatibility and price.
Why Upgrade the Suspension on a 2020-2025 BMW M8?
The 2020-2025 BMW M8 is a heavy, high-powered grand tourer, so suspension is the single biggest handling upgrade you can make. Curb weight starts around 4,295 lb for the F92 Coupe and climbs past 4,600 lb for the F91 Convertible and F93 Gran Coupe, and BMW tuned the factory adaptive suspension toward comfortable long-distance cruising. That calibration hides the chassis’ potential: there is visible wheel gap, measurable body roll in fast transitions, and a soft initial response that blunts the car’s 3.0-second 0-60 mph pace on a canyon road.
Lowering the M8 by roughly one inch drops the center of gravity, reduces body roll and tightens turn-in, while a quality coilover adds the damping control needed to keep 553 lb-ft of torque planted mid-corner. The right kit does this without ruining ride quality — the key is choosing between a full coilover and a spring-only kit, and deciding whether you want to keep the M8’s Electronic Damping Control (EDC) adaptive dampers.
The KW V4 is a two-way adjustable, motorsport-derived coilover built for the F9x M8.
Coilovers vs. Lowering Springs vs. Height-Adjustable Springs
For the BMW M8, the choice comes down to three formats. Full coilovers (like the KW V4) replace the entire strut/damper assembly, giving continuously adjustable ride height plus adjustable damping — the most capable option, but it removes the factory EDC dampers (a deactivation module is included). Lowering springs (like the H&R Sport set) swap only the springs, reuse the factory adaptive dampers, and give a fixed drop for the lowest cost. Height-adjustable springs (the KW H.A.S.) sit in the middle: they keep the factory EDC dampers but let you dial the ride height with a threaded perch.
A critical M8 detail: the car ships with EDC adaptive dampers, so any spring-only kit you buy must be validated to work with them. Both the KW H.A.S. and H&R Sport Springs on this list retain full EDC functionality and all driver-assistance features. Only the KW V4 coilover replaces the dampers, and it includes the electronic damping cancellation kit needed to prevent a dash warning. Explore the full range in our suspension collection.
The KW H.A.S. kit keeps the M8 factory adaptive dampers while adding an adjustable ride height.
KW V4 Coilover Kit — Best Overall M8 Suspension Upgrade
The KW Variant 4 is the best coilover for the 2020-2025 BMW M8, pairing motorsport-derived damping technology with genuine everyday usability. It offers a continuously adjustable ride height of roughly 10-30 mm (about 0.4-1.2 in) on both axles, plus independent damping adjustment: 16 clicks of rebound, 6 clicks of low-speed compression and 15 clicks of high-speed compression. That lets you set a comfortable street tune and a firmer track setup on the same hardware. Because the V4 replaces the factory struts, it includes an electronic damping cancellation kit so the M8 keeps every other assistance system active.
Key Specifications — KW V4
What We Like
- + Independent rebound plus low- and high-speed compression damping for street and track
- + Continuously adjustable ride height on both axles (about 10-30 mm)
- + Motorsport-grade hardware with corrosion-resistant, inox-line stainless struts
Things to Consider
- – Highest price of the three options at around $8,800
- – Replaces the factory adaptive dampers (EDC deactivation kit included)
Independent low- and high-speed compression adjusters let you tune the M8 for the street or the track.
KW H.A.S. Height-Adjustable Springs — Keep Your Adaptive Dampers
The KW H.A.S. (Height Adjustable Spring) kit is the best choice for M8 owners who want a lower, more aggressive stance without giving up the factory EDC adaptive dampers. Unlike fixed lowering springs, the H.A.S. uses a threaded spring perch so you can fine-tune ride height even after installation — roughly 10-30 mm at the front axle and 0-25 mm at the rear. All comfort and adaptive-damping functions of the factory suspension remain fully operational, which makes this the ideal daily-driver drop.
What We Like
- + Retains the factory EDC adaptive dampers and all comfort modes
- + Adjustable ride height (front 10-30 mm, rear 0-25 mm) even after install
- + Far less expensive than a full coilover at around $1,700
Things to Consider
- – No damping adjustment — you keep the factory damper curve
- – Less outright track capability than the KW V4 coilover
The KW H.A.S. threaded perch lets you set the M8 ride height while keeping the OEM adaptive dampers.
H&R Sport Springs — Best Value M8 Lowering Springs
H&R Sport Springs are the best-value way to lower a BMW M8, dropping the car about 1.0 in front and 1.0 in rear with a progressive spring rate roughly 10-20% stiffer than stock. They bolt onto the factory EDC dampers, retain the adaptive suspension, and are made in Germany with a limited lifetime warranty — all for around $560. Choose the part number that matches your body style: the F93 kit for the Gran Coupe and the F92 kit for the Coupe (and F91 Convertible).
What We Like
- + Lowest price of the three kits at around $560 (on sale from $659)
- + Even 1.0 in drop front and rear for a balanced, factory-clean stance
- + Progressive rate keeps ride quality civil; retains EDC adaptive dampers
Things to Consider
- – Fixed drop — no ride-height or damping adjustment
- – Body-style specific: match the F92 or F93 part number to your car
BMW M8 Suspension Comparison: KW V4 vs. KW H.A.S. vs. H&R
The table below compares all four M8 suspension kits on format, drop, adaptive-damper compatibility and price. The KW V4 is the pick for maximum adjustability; the KW H.A.S. and H&R Sport Springs are the way to go if you want to keep the factory EDC dampers.
| Kit | Format | Drop (F / R) | Adaptive Dampers | Price |
|---|---|---|---|---|
| KW V4 Coilover KitTop Pick | Full coilover | 10–30 mm adj. | Replaces (delete incl.) | $8,774.00 |
| KW H.A.S. Springs | Height-adj. springs | F 10–30 / R 0–25 mm | Retains factory EDC | $1,704.00 |
| H&R Sport (F93 Gran Coupe) | Lowering springs | 1.0 in / 1.0 in | Retains factory EDC | $560.15 |
| H&R Sport (F92 Coupe) | Lowering springs | 1.0 in / 1.0 in | Retains factory EDC | $560.15 |
How to Choose the Right M8 Suspension Kit
Start with how you use the car. If you take your M8 to track days or want the ability to corner-balance and fine-tune damping, the KW V4 coilover is worth the roughly $8,800 investment. If the car is primarily a fast street GT and you value the factory adaptive ride, the KW H.A.S. (around $1,700) keeps the EDC dampers while giving you an adjustable drop. For the cleanest, most affordable stance upgrade, the H&R Sport Springs at about $560 are hard to beat.
Whichever kit you choose, budget for a professional alignment afterward: lowering the M8 changes camber and toe, and a proper corner-balance and alignment protects tire life and preserves the car’s composure. Our Tampa, FL team installs and aligns M8 suspension regularly, and pairs these kits with matching upgrades from our exhaust collection for owners chasing the full package. Verify the exact fitment for your F91, F92 or F93 body style before ordering.
A full KW V4 coilover strut assembly for the F9x M8, ready for corner-balancing and alignment.
Frequently Asked Questions
What are the best coilovers for the BMW M8?
The KW Variant 4 (V4) is the best coilover for the 2020-2025 BMW M8. It offers a continuously adjustable ride height of about 10-30 mm on both axles, independently adjustable rebound (16 clicks) plus low- and high-speed compression damping, and it includes the electronic damping cancellation kit needed after removing the factory EDC dampers. It sells for around $8,800.
Can you lower a BMW M8 without losing the adaptive dampers?
Yes. The KW H.A.S. height-adjustable springs and H&R Sport Springs both retain the factory Electronic Damping Control (EDC) adaptive dampers and all comfort modes. Only a full coilover like the KW V4 replaces the adaptive dampers, in which case an EDC deactivation kit (included) prevents a dashboard warning.
How much does the H&R Sport Spring drop the M8?
H&R Sport Springs lower the BMW M8 approximately 1.0 inch at the front and 1.0 inch at the rear, using a progressive spring rate roughly 10-20% stiffer than stock. They work with the factory adaptive suspension and cost about $560.
Do M8 lowering springs require an alignment?
Yes. Any ride-height change alters camber and toe, so an alignment is required after installing M8 lowering springs or coilovers. We recommend a corner-balance and full alignment to protect tire wear and keep the car handling predictably.
Will these kits fit the M8 Competition and every body style?
Yes. Kits are available for the F91 Convertible, F92 Coupe and F93 Gran Coupe, including M8 Competition variants. Choose the part number that matches your exact body style — the KW V4 (3A7200DZ) and H&R 28686-4 fit the F93 Gran Coupe, while the KW H.A.S. (253200CW) and H&R 28686-3 fit the F92 Coupe.
Coilovers or lowering springs for the M8 — which should I choose?
Choose the KW V4 coilover if you track the car or want fully adjustable ride height and damping. Choose the KW H.A.S. or H&R Sport Springs if you want a street-focused drop that keeps the factory adaptive dampers and ride comfort.
How much does it cost to upgrade BMW M8 suspension?
BMW M8 suspension upgrades range from about $560 for H&R Sport Springs to around $8,800 for the KW V4 coilover kit. The KW H.A.S. height-adjustable springs sit in between at roughly $1,700, before installation and alignment.
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