Rocks and debris that collect off the racing line.
Marbles racing tires.
Racing tires come in many different hardness compounds.
To understand how marbles are formed let s look at the science behind racing tires.
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.
A well used tire that is wearing evenly will show uniform abrasion across the entire contact patch.
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.
The marbles on the track will also affect the grip your tires have with the road surface.
Britannica other components that go into a tire include fillers and rubber attaching agents.
The original idea behind tire management related to how the driver cared for the tires and manipulated the tires for maximum traction.
Marbles pieces of rubber from tires that accumulate on the racing surface outside of the racing line that are slippery like toy marbles.
Racing surfaces vary not only from track to track but during a night s racing at the same track.
And you are going to notice your car is losing traction when you do.
There s an example of where rubber on the racetrack does not improve grip.
The excess rubber comes off in the form of rubber dust and molten pieces referred to as marbles.
The tires used for both nascar and iroc style racing are completely different from the standard road tires on passenger cars.
Grooveless tires in auto racing melt and pieces become known as marbles.
Some tracks act like a grinder or cheese grader on the contact patch of the tire causing the tire to wear faster.
Racing tires are designed to wear.
But the type of tires f1 requires just produce a whole lot more deposition and take up of rubber.
The best kind of racing tire because they ve had a few laps of wear to normalize the surface.
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.
Softer compound tires are better for a lighter weight vehicle while a harder compound tire is better on heavier vehicles.
In order to provide maximum grip between the tires and the track manufacturers create wide grooveless racing tires called slicks.
Since drag racing tires have a softer compound than typical street tires you would think that softer is better.
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.
Marshal a person responsible for signaling track conditions to drivers through use of flags extinguishing fires removing damaged cars from the track and sometimes providing emergency first aid.
