I look at this all slightly differently.
I save up and buy my bikes outright. Do the best deal I can at the time and generally buy brand new, but always pay £150 deposit on my Credit Card.
I then service and maintain them myself.
I don't worry about Warranty because the Sales of Goods and Services Act, Section 75 Credit Act, and Buy with Confidence Scheme from Motorcycle Industry Association covers me.
'Warranty'.... in my opinion is nothing more than a good will gesture, but you have to pay them for the privilage and dance to their tune. Its nothing more than a smoke screen to fill your heart with fear of not complying with their 'insurance plan' - which you all pay for. and it's stalling tac-tics to move you away from your actual rights under UK Law.
I've brought two UK Manufacturers to Court refusing to comply with their 'warranty' and settled both in my favour. They shit themselves when you apply your actual rights, and not play their 'warranty' game.
In my experience with many different dealers
A) They do not understand UK Law and presume Warranty is the golden ticket. It isnt.
B) Workmanship is very expensive and shoddy in a lot of instances.
C) My bikes have come home more broken than when they went in... on some occasions (and that's before I pissed them off).
Resale value... ha
Dealers will rip you off as best they can. Bullshit reasons why your bike is worthless.
I remove all my farkles and sell seperatley before sale. Then sell privately.
Never had an issue with home servicing and people love the condition of my bikes.
Fuck the system, it's toxic, it's broke.
Love my bikes, love my riding, love my life. Take control, it isn't hard once you stop listening to the bullshit. Oh, and I don't have any hassle, still have a good relationship with most of my dealers when I need to use them.