Wednesday, 24 April 2013

rFactor 2 and the new tire model - First impressions

It's generally accepted that one of the most important elements (if not, the most important element) in any racing sim is the tire simulation. People often say the ultimate performance of a car comes down to what's going on with the contact patches in each corner, which is what makes simulating them well so important.

I can't deny that in terms of technical comprehensiveness, the tire model in rFactor 2 is much more comprehensive than it is in rFactor 1. And I have learned a lot from it, it's been fascinating to work with. But it seems inappropriate for modders.

Friday, 19 April 2013

Modelling tires in rFactor

This is an idea I've been throwing around in my head lately, whereby characteristics are designed for individual tire compounds, and then transferred to different tire sizes.

Parameters in the TBC file like Heating and WearRate maintain what the average is around the full circumference of the tire. The heating parameter controls the effect of rolling and friction on the average temperature all the way around the tire, and the same applies to wear rate.

But tires of different measurements will have different surface areas. More rubber mass on the tire, more mass to heat up, and more mass to shave off when wearing the tire down. So, a larger tire of our compound will wear down slower and heat up slower than a tire of the same compound but smaller size, right?