56mm 99a Spitfire Wheels Grimple Stix Furry Formula Four Classics
Spitfire Formula Four Classic Wheels
NOTE: Sold only as a set of four (4) wheels.
Diameter | 56mm |
Hardness | 99a |
Width | 35mm |
Riding Surface | 17.5mm |
Core | No |
Formula | Formula Four |
The Spitfire Formula Four Classics 99a skateboard wheels have a narrower contact patch, which has become the standard shape for street skating. Spitfire released their new Formula Four wheels a few years ago now. The latest formula was designed for higher abrasion resistance. This means it is a little harder to flat spot. Formula Four 99a wheels are generally decorated with a blue themed graphic. Unless of course it is one of the signature wheels. The signature wheels feature artwork custom designed for each rider. 99a is considered a softer wheel in the modern skateboarding scene. They are still very hard. The 99a formula will provide a little more grip on super smooth surfaces and is a little more forgiving to ride on rougher surfaces. There are no hard and fast rules, best to try out different wheels and select what works best for you.