All the comments above are true that rather than havign a risk of getting stranded if you have a puncture then carry a spare. Want to save fuel or improve performance, then lighten somewhere else for example not to fuel up to the max, say reduce by 15-20ltrs to compensate the spare tire weight.

However, make sure that you all know how to change tire, ensure the spare tire is still inflated enough, know the proper technique to maximize your power to loosen up the lug nuts, and the tire lug nuts are not over tightened by the shops impact gun! How many of you can ensure all those so that you will 100% be able to change to spare? I'm quite sure many very rarely check your spare if at all, and most never tell or keep an eye on the shops when they tighten up your rims. If you don't then no point carrying a spare tire coz that means it will be useless anyway when you need it! For me, it's even a better idea if you also carry an electric pump to plug into the cigarette lighter in case you somehow cannot replace with your spare for one of the reason above.

This post has been edited by 6UE5T: Oct 17 2016, 11:22 PM

I also suspect the same, that's why I mentioned in my post above as well.

Well you'll be surprised! People can understand the theory but can they REALLY do it?? Do most people also really know the proper technique to maximize their strength when loosening up a very tight lug nut without ruining it using the standard tool provided (which is normally the case coz most are tighten using impact gun)?? That's not told in the manual I believe. Even if it's taught somewhere, again can they really do it, or have they tried it?? I think many don't know and/or don't bother to try it and when comes time that they have a flat and they really need to do it, end up many cannot do it!

Yes, I also so far only once need to change tire in MY (and that's also for my wife's car) but had done so a few times before in other countries. Yes it is not an easy task especially if the nuts are over tighten by the shops. That's why I said you need to know the right technique to do it, not just having an extension btw. That's why I also said at least you need to try it to get a feel of how to do it. I myself also supervise shops when they tighten up my rims to make sure they don't over tighten them so I can be 100% confident that I myself can remove them using standard wrench with minor extension. I bet most people don't do this, and I bet many also don't know the proper technique. So therefore I also suggested to have an inflator just in case coz most tire puncture are slow puncture so you can use the inflator to help temporarily.