I had played this car which is my friends.(He works for Hobao
) What I feel is ... Hum......This car is just like my G4. Very stable.....In fact it is too stable and a little push. Of course it's not mine,so I can't adjust it to what I want. GP-4 use planetary gears in its rear differential, just like mine GT-4.(damn...I spent too many money on R/C,don't tell my wife please.....) So even #100,000 diff oil is still not tight enough to me. Because GP-4 has super low C.G. so maybe use softer front tyres will be better.