Apologies for coming to this thread late BUT ...
I have a negative experience of Dealing with Warranty Wise and would strongly urge you to reconsider:
I had their premier level warranty on my E46 330i. It suffered two snapped rear coil springs so I popped it down to my local BMW Dealer.
It took WW 2 days of faffing about to even assess my claim. Over the two days they came out with every excuse you can think of: Dealer never contacted them; Dealer never returned their claim form etc. etc. - and I know that this was not the case and the Dealer made several documented efforts to show they had indeed done so.
So 2 days without my car, and still waiting on them to assess my claim, they finally got the claim form. Sent it back claiming certain information as not included, so another day lost (now at 3 days, still no repair or car).
On day 4, WW declined the claim saying that for two springs to snap was impossible and the fault must have been there from before cover commenced (bear in mind that this was 5 months into a 2 year policy and the car had been MOT'd by the Dealer 6 weeks prior to this discovery).
So yet more to'ing and fro'ing between myself, Dealer and WW as I fought for them to agree to the cost of repair. This took another 2 days - they then agreed to accept the claim but declined to pay the cost of genuine BMW parts or the full labour rate of the dealer (although i had paid extra for Main Dealer cover). They cited that the costs broken down by the Dealer were excessive and above and beyond what they budget for Main Dealer rates. Their suggestion was that they would pay only for the proportionate cost of what OE parts would cost and if I wanted genuine BMW springs, then to pay for the extra myself.
Now bear in mind, my car has been off the road for the best part of a week and I am no closer to getting repair - that cheap warranty is now looking rather expensive, when you consider the amount of my own time I had to plough into getting this resolved as well as the embarrassment I faced with the Dealer who had my car parked on their lot unable to do anything with it!
Eventually, WW paid what they believed to be appropriate costs and thanks to BMW UK (through goodwill) made up the remainder. After 10 days, car was repaired and returned to me.
I cannot stress how worthless these third party warranties are - the only warranty worth having is the manufacturer backed one: Claims are seamless, claims paid directly tothe Dealer (so you don't have to pay upfront and wait for their cheque), claims almost immediately authorised, all internalised claims process and your Dealer will deal withe verything. Very simple and straightforward and although you pay for it up front, the convenience and worry free element is worth it IMHO.
Also, just by example, to help illustrate the true value of the Lexus Extended Warranty, it might be worth asking WW if they will cover the auto. dimming wing mirrors on your car if they go faulty? Lexus Warranty will, but WW wont!
I had a Lexus Warranty when we had our RX, posted each time I had a claim on this forum - process was worry-free and had the car back within a day.
Pays your money, takes your chances!