How To Check Ride Height

Click for help...Click for help...

Please Note: Ride height measurements should NOT be checked for at least 2 hours after the car has been driven. This is to ensure Hydra-Gas fluid temperature and suspension have had sufficient time to settle.

Step 1: Park unladen car on flat level surface with steering in a straight ahead position.

Step 2: Bounce each end of the car a number of times and allow to settle.

Step 3: Roll car forward 1 metre to relieve any stress in suspension. Do not apply handbrake - position wheel blocks to prevent car rolling.

Step 4: Push down front of the car and release allowing the suspension to return unaided. Do not re-apply handbrake.

Step 5: Measure both front ride heights from top centre of the wheel arch to centre of wheel hub. Front ride height for standard MPI and VVC models is 368mm +/- 10mm. For MGF's with modified/lowered suspension, consult the workshop where the modification took place (if possible) for appropriate values.

Measure Ride Height
Click image to enlarge


  • Ambient temperature effects ride height. Specified ride height values are correct when measured at 17C. When measuring at temperatures above/below this, compensate by a factor of 0.6mm per C.
    ie. At 19C using the nominal value of 368mm, front ride height should measure 369.2mm.

  • Although it is not a requirement to do so, you may wish to measure rear ride heights for reference. Rear ride height for standard MPI and VVC models is 363mm +/- 10mm.

  • DO NOT attempt to lower ride height by releasing Hydra-Gas fluid, this may result in irreparable damage to Hydra-Gas units. If you wish to lower your F you should use the appropriate parts/methods.

30th September 2001, Paul Lathwell & Sue Fowler.