hello mate.. up till last year i was a mot tester so unless things have changed i should be able to help..... the spare tyre is not part of the mot test unless like fiestas its under the car and then all it is checked for is that it is secure... so no you dont need one.... the emmissions may be rich if it has been set up to run high boost but the mot station will reset them to pass the mot if you ask them nice ( a back hander usually helps) it will only take a couple of mins. but you will need to get it set up again on the rollers.. as for driving it too and from the test station as long as you have the car booked in at the garage with your name reg number and time you are allowed to drive it but only there and back.....