It looks fine.
The head turning sprite is only seen when you're turning very gently, at low speed, or in place. I'd HATE to see a tap of the directional pad shift the whole kart in place. You should make a separate/optional turning sprite where the wheels alone angle in the corresponding direction though; like all vehicles do when you steer the wheel, even in place. It'd be interesting to see.
EDIT: Though it may not work because the front wheels (the ones that actually steer a vehicle) are hardly visible in the sprites. Ignore that :V
The head turning sprite is only seen when you're turning very gently, at low speed, or in place. I'd HATE to see a tap of the directional pad shift the whole kart in place. You should make a separate/optional turning sprite where the wheels alone angle in the corresponding direction though; like all vehicles do when you steer the wheel, even in place. It'd be interesting to see.
EDIT: Though it may not work because the front wheels (the ones that actually steer a vehicle) are hardly visible in the sprites. Ignore that :V