Fender Design - Wheel Arch Challenge

Wheel arc calculation is necessary for the fender design to pass the local regulation which are based on the local road conditions.

Wheel arch is a semi-circular area in fender, which houses the wheel well. It should have a sufficient clearance between tyre and wheel arch. So, that it doesn’t touch the wheel arch area during suspension. The clearance value differ from region to region, here are few regulations.

European Regulation Standard:

The clearance value will be more than 10mm at 30 degrees at forward and 50 degree at backward and line 150mm above X-axis and Mid-point between 50 degree and line above 150mm.

accoridng to above image SA-SA having clearence of 10mm as same as SB-SB having the same clearence of 10mm remaning SC-SC, SD-SD and SE-SE having negative clearence and less clearence then the standered clearence

SC-SC it having clearence of the 1.4mm friom wheel to the wheel arch

SD-SD it is having the clearence of tthe -1.3mm so that it doesn't exit

SE-SE it is having the clearence of the -4.9 inside so the design of wheel arch is to change to 10mm at every point of the wheel