Always enjoyed Mallorca on the roadie but pondering the mtb for trip later in the summer. Does this advice still stand…..
Bad access laws
Best get a guide
Guides won’t take small groups
Best take the road bike

Or have things changed since 2011?

Its nowhere near as bad as that, although the routes are less well known, so worth getting a guide.

Ive been mountain biking to Mallorca a couple of times now, most recently we used http://www.Tramuntbike.com for guiding. We did their 3 day trmuntana end to end off road ride, it was really good, no issues with us as a small group (4 of us).

The riding was the usual rocky tech stuff.

He also does van assisted uplift days etc if that’s more your thing. And can hire you a decent full suss bike if you need one. He also does road biking tours if you fancy some of that.

If you get in touch, speak to toni (the owner) and tell him julian sent you.

I’d go back again.

+1 for tramantuna tours, did the uplift day – 2/12h down Barranc de Biniaraix on a Trek Slash – great fun
On the other side of the island try roxybike in cala millor – son servera and aubarca are fun up-down single track day rides (other riders will be german so plenty of lycra action)
Or take your own bike/hire one out there and use the rock and ride guide book http://www.rockandride-mallorca.com