As the rules specified (as revised recentally), Active Steering and ABS is the only aid available. Of the cars selected, none can be race cars so concepts are allowed as long as they are within the budget.
Sports Soft are worth between 9.5-12k while Racing hard tires are worth between 12.5-18.5k, yet sports soft have a bit less grip than racing hard in various cars. The track has a wide variety of corners and several high speed sections, so you'll have to think about what is the best option for you.
The event was made for fun and to allow players to be strategic in how they build a car within limitations, this isn't really a competition though there are various ways players can make their cars faster around the track (Smarter use of budget, Driving Skill, etc). Though many will likely consider Racing tires for having so much grip, the price (12.5-35k) will possibly prevent you from buying other parts to boost performance.
Technically, anything goes as long as it is within the rules.
You do have a point DolHaus, Applying the parts used would be a smart thing to do, so the calculations can be provided to see if anyone went over their budget.
Last edited: Jan 17, 2015