Jnor
Peter Fenwicke (45)
Well you can put full road tyres on the the 400E (which is what I did to my 250) but they're still a 21in front and 18in rear when pretty much all road bikes are 17in front and rear.
The 400SM has those smaller wheels so you can fit a wider range of better tyres for the road (and it has better brakes) and will still do fire trails as it still has the ground clearance and suspension of a dirt bike. Being a trailie on smaller wheels it'll stand up to crashing better than a road bike too.
Some guys change their wheels over but IMO it'd be a pain to do more than a few times a year and buying another set of wheels/tyres isn't cheap either.
The 400SM has those smaller wheels so you can fit a wider range of better tyres for the road (and it has better brakes) and will still do fire trails as it still has the ground clearance and suspension of a dirt bike. Being a trailie on smaller wheels it'll stand up to crashing better than a road bike too.
Some guys change their wheels over but IMO it'd be a pain to do more than a few times a year and buying another set of wheels/tyres isn't cheap either.