Table of contents
With the following G80 M3 and G82 M4 suspension upgrades, your BMW will understeer less, generate more mid-corner grip, and put its power down more effectively. Braking stability and steering feedback will also be greatly improved.
In this M3 and M4 suspension upgrades guide, we’ll detail the G80/82’s handling weaknesses and reveal which suspension upgrades are most effective at fixing them. We’ll also explain which Suspension Secrets handling packages are best suited for fast road and track driving.
Model Overview
The BMW G80 M3/Competition and M4/Competition debuted in autumn 2020. There was power aplenty, with outputs from their twin-turbocharged ‘S58’ six-cylinder engines peaking at 480hp/550Nm and 510hp/650Nm respectively. Transmission options were an eight-speed automatic or six-speed manual (not available in the UK).
The M3 and M4 models boast Adaptive M suspension front and rear, using lightweight components and M-specific tuning for sharper handling and better body control. Non-Competition variants run an 18-/19-inch front/rear wheel setup, whilst Competition cars use 19-/20-inch wheels. BMW’s intelligent M xDrive all-wheel-drive system became available from the summer of 2021 on the M3 Competition and M4 Competition.
A mid-life refresh in 2024 saw M xDrive models receive a 20hp boost in power (now 530hp) along with mild interior and exterior refreshes. Rear-wheel-drive cars were eventually discontinued, and more track-focused M3 CS and M4 CS models with 550hp were also added to the range.
M3 & M4 Handling Issues
The G80 M3 and G82 M4 suspension is compromised by design to control manufacturing costs and cater for a broad range of driving abilities. This creates a number of problems for keen drivers including…
- Steering low on feedback
- Mid-corner understeer
- No front camber adjustment
- Limited rear camber adjustment
- Rubber bushings causing instability
However, handling can be dramatically improved with a range of bolt-on Suspension Secrets upgrades that require no changes to bodywork.
Common Handling Problems (And How to Fix Them)
BMW intentionally sets up the G80 M3 and G82 M4 to understeer at the limit. While safe, this compromises driver confidence and engagement.
The most effective fixes are:
1. Increasing front camber to reduce understeer
2. Improving rear toe control to enhance traction
3. Lowering the centre of gravity to reduce pitch and roll
4. Correcting geometry with a professional alignment
Together, these upgrades completely transform how the M3 and M4 respond to steering, braking, and throttle inputs.
Suspension Geometry & Alignment Setup (Top Tip)
A full suspension geometry alignment is essential after installing new suspension parts.
By correctly adjusting camber, toe, and caster (where available), alignment ensures you maximise grip, stability, and tyre life.
Benefits of Proper G80 M3/G82 M4 Geometry Setup
- Sharper steering response
- Increased cornering grip
- Improved rear traction
- Enhanced braking stability
A professional alignment is the single most cost-effective handling upgrade you can make.
Essential Suspension Upgrades for BMW G80 M3 & G82 M4
These are the best suspension upgrades for the BMW G80 M3 and G82 M4, offering the greatest performance gains per pound. They also form the foundation of all Suspension Secrets handling packages.
Lowering Springs
Aftermarket lowering springs are a superb first suspension mod for the G80 M3 and G82 M4.
Benefits:
- Lowered centre of gravity
- Less brake dive and acceleration squat
- Reduced body roll
- Improved aesthetics and wheelarch fitment
Lowering springs are typically stiffer than OEM springs, which actually improves refinement by reducing BMW’s characteristic suspension crashiness.
They also introduce a positive rake angle (lower front ride height than rear), which:
- Improves braking stability
- Enhances turn-in response
Adjustable Camber & Caster Plates
A lack of factory camber adjustment is the primary cause of the G80 M3’s and G82 M4’s understeer.
Adjustable camber plates allow additional negative camber to be dialled in, significantly improving front-end grip and steering feel.
Why Camber Plates Matter on the G80 M3 & G82 M4
- Reduce understeer
- Sharpen turn-in
- Increase steering feedback
- Improve tyre wear on track
Suspension Secrets Adjustable Camber & Caster Plates also increase caster angle, providing dynamic camber gain as steering lock is applied. High-performance Rodobal bearings improve damper response, while toothed adjustment slots prevent settings from slipping under hard use.
These camber plates work perfectly with standard dampers, lowering springs, or coilovers.
Adjustable Rear Toe Arms
Once the front G80 M3 and G82 M4 suspension is improved with camber plates, attention must shift to the rear axle.
During extensive road and track testing, we identified rear toe instability as the main cause of traction loss and rear-end nervousness on corner exit.
Suspension Secrets Adjustable Rear Toe Arms offer:
- Greater adjustment range than OEM arms
- Independent optimisation of camber and toe
- Solid mounting to eliminate flex under load
Unlike the rubber‑bushed factory arms, our solid-mounted toe arms maintain consistent geometry during acceleration and high-speed cornering.
Suspension Packages Explained
If you’re ready to take handling to the next level, Suspension Secrets offers a range of complete M3 and M4 suspension packages for road and track use.
CS+ Handling Pack 1 (Fast Road)
Designed to fix the G80 M3’s and G82 M4’s biggest handling weaknesses, the CS+ Handling Pack delivers exceptional value.
Includes:
- Adjustable Camber & Caster Plates
- Adjustable Rear Toe Arms
This package provides more camber and caster adjustment than BMW’s own CS/CSL upgrades, significantly reducing understeer while improving rear stability.
Best for: Fast road and occasional track use
Handling Pack 2 (Clubsport)
Handling Pack 2 is a comprehensive Fast Road/Track solution with optional coilovers or lowering springs.
Includes:
- Adjustable Camber & Caster Plates
- Front & Rear Drop Links
- Adjustable Rear Toe Arms (with lockout kit)
- Adjustable Rear Traction Arms
- Front Offset Caster Bushes
- Choice of Springs, HAS kit, or Coilovers
Best for: Enthusiast road drivers and fast road/track combination
Handling Pack 3 (Track)
Designed for drivers seeking maximum adjustability with minimal NVH increase, Handling Pack 3 focuses heavily on rear traction and precision.
Includes:
- Adjustable Camber & Caster Plates
- Adjustable Rear Toe Arms
- Adjustable Rear Camber Arms
- Adjustable Rear Traction Arms
- Front Offset Caster Bushes
- Solid Rear Control Arm Bushes
- Front And Rear Drop Links
- Coilovers or lowering springs
Best for: Regular track driving
Full Kinematics Kit
The ultimate suspension solution for serious circuit use.
Includes:
- Fully adjustable rear toe, camber, and traction arms
- Lockout kits for consistent geometry
- Solid front and rear bushes
Best for: Dedicated track cars and competition use
BMW G80 M3 & G82 M4 Suspension FAQ
What are the main handling weaknesses of the BMW G80 M3 and G82 M4?
The G80 M3 and G82 M4 are set up from factory to understeer at the limit, which is safer but less engaging for keen drivers. The biggest issues tend to be low steering feedback, mid-corner push, limited camber adjustment (especially at the front), and rubber bush flex that can make the car feel less stable when pushed hard.
What suspension upgrade makes the biggest difference to understeer?
The single most effective upgrade for reducing understeer is adding front negative camber using adjustable camber (and ideally caster) plates. Because the standard car lacks proper front camber adjustment, the front tyres struggle for grip during hard cornering, which causes the car to wash wide. Camber plates dramatically improve turn-in, mid-corner bite, and steering feel.
Why do rear toe arms matter on the G80 M3/G82 M4?
Once the front end has more grip, the rear axle becomes the next limitation, especially under power on corner exit. The factory rear toe control can allow unwanted movement under load, which leads to traction loss and rear-end nervousness. Adjustable rear toe arms solve this by keeping rear geometry consistent, improving stability, traction, and confidence.
Are lowering springs worth it on these cars?
Yes — lowering springs are one of the best first modifications because they lower the centre of gravity and reduce brake dive, squat, and body roll. They can also improve refinement by reducing excessive body movement that contributes to BMW’s typical “crashy” ride. The slight rake they introduce also improves braking stability and helps the car rotate more cleanly into corners.
Which suspension package is best for road use vs track driving?
For fast road driving and occasional track use, CS+ Handling Pack 1 offers the best value because it fixes the biggest handling flaws without overcomplicating the setup. Handling Pack 2 is ideal for mixed road/track use with more supporting parts and optional spring or coilover choices. If you track the car regularly, Handling Pack 3 gives maximum control and adjustability, while the Full Kinematics Kit is best reserved for dedicated circuit or competition cars.
Tested and developed by Suspension Secrets through extensive road and track evaluation, these BMW G80 M3 and G82 M4 suspension upgrades unlock a new level of handling performance.