26th-Apr-20, 04:38 PM
A good Scale reference for tyre diameter would be this page https://www.michelinmotorsport.com/Tyres/Auto-Circuit
For your contemporary 1/32 GT racers a scale front tyre diameter on a 18 inch rim could go as low as 20,6mmø, rears as high as 22,5 mmm
Meaning that the run of the mill 1/32 tyre is about 2mm to low, not to mention racers sticking to "zero grip tires" with a total wheel diameter of barely 17 mmø
So why are most slotrace wheels too small? Well its a bit of a slotrace chicken and egg situation.
Most 1/32 (plastic) regs are based on "box stock" rules, makes like Scalextric and Carrera do come with pretty close to true scale tyres
But if a slotracer can't change the position of their axles, running small tyres and wheels is the simplest way to lower your car, improve your CG and magnetic motor downforce, reduce weight.
For most slot racers need for speed overrules True Scale appearance.
with kind regards
Tamar
For your contemporary 1/32 GT racers a scale front tyre diameter on a 18 inch rim could go as low as 20,6mmø, rears as high as 22,5 mmm
Meaning that the run of the mill 1/32 tyre is about 2mm to low, not to mention racers sticking to "zero grip tires" with a total wheel diameter of barely 17 mmø
So why are most slotrace wheels too small? Well its a bit of a slotrace chicken and egg situation.
Most 1/32 (plastic) regs are based on "box stock" rules, makes like Scalextric and Carrera do come with pretty close to true scale tyres
But if a slotracer can't change the position of their axles, running small tyres and wheels is the simplest way to lower your car, improve your CG and magnetic motor downforce, reduce weight.
For most slot racers need for speed overrules True Scale appearance.
with kind regards
Tamar
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