Wheel Balancing

  1. Wheel balancing to very fine limits, especially at the front, is of the utmost importance to the smooth running and braking of Aurelias. The symptoms of bad balance can be shaking in the steering wheel often at around 45 mph and 90 mph, and brake judder, although the latter can be eliminated by careful attention to correct assembly of the brakes. Correct toe-in adjustment and proper seating of the tyres especially on old, rusty rims should be carefully attended to.
  2. The difference that a few grams can make is generally remarkable, and it is always worth your while to search for a wheel balancing service that will take the time necessary to do the job properly.
  3. The front wheels must be balanced dynamically, that is, on the car spinning with the brake drum. The drum should be balanced from new and if there are wheel-balancing problems the drum balance should be looked at separately.
  4. The rolled wheel rims were difficult to attach lead balance weights to until the advent of self-adhesive weights. Originally special weights were listed as spare parts to be attached to small threaded studs on the inside of the wheels. – See information below from Sketch 251


Below is a small extract from Lancia C. AST Sketch 251 I 10.5.60 “Instructions for balancing wheels on Nurburg balancing machine 8056005”. Copies of the full Sketch can be supplied if required.


Position of the studs on wheel B10-73601

Aurelia 1st Series and Aurelia GT up to car B20 No. 1500

A black and white drawing of a wheel with a brake system.

Position of studs on wheels:

B20-73601 – Aurelia GT from car B20 No. 1501 and GT 2500 up to car B20 No. 2951

B12-73601 – Aurelia GT 2500 from car B20 No. 2952 and 2nd series Aurelia [B12] (data between brackets)

A black and white drawing of a wheel with a brake system.