top of page

Front Engine AWD High Speed Instability Fix

Note: High-speed instability in F-AWD cars can be unnerving — even though AWD adds traction, it doesn’t automatically guarantee stability. In fact, some F-AWD setups (especially front-biased ones) can feel floaty, nervous, or unsettled at speed.

​

Even though AWD adds traction, F-AWD cars can still feel darty, nervous, or rear-active at high speeds due to:

 

Causes

 

  • Heavy front weight bias: front tires are overloaded so may track inconsistently or become floaty over crests

  • Front power bias: front wheels pulling hard under power can make the car wander or feel twitchy

  • Soft front suspension: excessive dive and float causes vague or delayed steering at speed

  • Improper aero balance: too much rear aero or too little front = front-end lift and yaw instability

  • Bump steer or chassis pitch: small inputs or road bumps cause exaggerated movement at high speeds

​

Fixes

​

  • increase rear power balance (stabilizes directional changes at high throttle)

  • increase forward brake bias (Helps stabilize the car during high-speed deceleration by preventing rear-end lightness or rotation)

  • increase front aero (keeps the front planted for high speed stability / steering)

  • rear aero - balance - don't increase too much (keeps rear planted without overpowering front)

  • stiffen front springs (prevents excessive lift and excessive dive and roll at speed)

  • stiffen front damper compression (improves responsiveness and stability at high speed)

  • stiffen front damper rebound (slows rebound after bumps and stabilizes steering)

  • slightly soften rear damper rebound (reduces rear bouncing / twitchiness and keeps more stable / planted)

  • slightly stiffer front ARB (adds front end stability and improves steering control)

  • slightly softer rear ARB (keeps rear planted and reduces twitchy yaw movements)

  • increase front negative camber (to increase grip on cornering and maintains front end control)

bottom of page