Racing tires come in many different hardness compounds.
Marbles racing tires.
The excess rubber comes off in the form of rubber dust and molten pieces referred to as marbles.
Grooveless tires in auto racing melt and pieces become known as marbles.
Since drag racing tires have a softer compound than typical street tires you would think that softer is better.
Some tracks act like a grinder or cheese grader on the contact patch of the tire causing the tire to wear faster.
There s an example of where rubber on the racetrack does not improve grip.
In order to provide maximum grip between the tires and the track manufacturers create wide grooveless racing tires called slicks.
If a driver enters the marbles at an excessive speed his car will lose grip and drive perilously into awaiting hazards as if a person walked across a bed of marbles.
But the type of tires f1 requires just produce a whole lot more deposition and take up of rubber.
A well used tire that is wearing evenly will show uniform abrasion across the entire contact patch.
To understand how marbles are formed let s look at the science behind racing tires.
Softer compound tires are better for a lighter weight vehicle while a harder compound tire is better on heavier vehicles.
The tires used for both nascar and iroc style racing are completely different from the standard road tires on passenger cars.
And you are going to notice your car is losing traction when you do.
Racing tires are designed to wear.
If you want to try running a different line on the track it will take a little bit of work to clean the marbles from that line.
And while the off track care and use of tires leading up to this is really important what the driver does in the cockpit with the controls on the track is still the most important element.
Racing surfaces vary not only from track to track but during a night s racing at the same track.
The best kind of racing tire because they ve had a few laps of wear to normalize the surface.
Rocks and debris that collect off the racing line.
Britannica other components that go into a tire include fillers and rubber attaching agents.
Goodyear racing eagles like all racing tires are made from a rubber compound containing elastomers elastic polymers that can stretch and return to their original shape source.
The marbles on the track will also affect the grip your tires have with the road surface.
This is not always true.
It s impossible for tire companies or race teams to run controlled tests and definitively say that grinding siping or grooving tires in a specific pattern or to a specific depth gives specific amounts of additional traction heating cooling.
Marbles pieces of rubber from tires that accumulate on the racing surface outside of the racing line that are slippery like toy marbles.
