Porsche optional insurances

[Gorsh]

I'm buying a new 991.2 GTS (on order for July delivery), the OPC has given me quotes for optional extra insurances.

The first is GAP - £599 3 years £25k claim limit. I might buy this but from ALA or gapinsurance.co.uk where I can get better cover for less.
Tyre and Alloy Wheel insurance - £649 for 3 years. Considering a puncture means a new tyre at £300 this might be considered worthwhile.
SMART repair - £499 for 3 years minor repair cover. Not sure this is worth considering.

What do you all do regarding these insurances? Are they considered to be worth having?
I would appreciate your opinions and any experience you have had with them.
Thanks.

[W8PMC]

All the above are available for far less & with better cover.

The one place you DON'T buy these insurances from is a car dealer as they'll have a very healthy chunk of margin in the policies. Buy straight from the Insurers online.