I've tried RFE from GPVWC, driving around with some other TPS drivers who race there.I dont know why would anyone want to use RFE. It is highly unrealistic. You can drive curbs in wet like its dry, grass also doesnt have any different grip in wet. Only realistic thing about it is drying line, which is also a bit questionable because it runs on areas that go towards curbs where as I said, its unrealistic grip on wet.