Hello
What do you mean no shop open Sunday?
Go to somewhere like Kwik Fit open 7 days a week and your puncture can be fixed or the tyre replaced there and then.
Your tyres should be 205/60H16. Standard.
You are correct when you say the spare is thinner than the other ones. It supposed to be. It is called a space saver spare tyre.
These are used in cars like yours where you have the 2 extra seats in the boot where a normal spare tyre would fit? So have to find somewhere else to keep it.
It is only meant to be used when you get a puncture and if you check your Owners Manual it will probably say the same as mine on my Daihatsu Max speed whilst using it 50 MPH. (A big help if you get one on a Motorway?) Mine is because the whole car is small, Some newer Sports cars only give you a spray can of rubber solution and air to get you to the garage.
Andy C
www.toyota.co.uk