The problem with the stock 19” tyres is the 225 width, due to the 7J rims.
Other than the stock Toyo, I believed Nexen also has 225, which is about Rm7xx/pc
If Mazda uses 8 or 8.5J rims, will be much easier to find the compatible tyres

Yep. Generally diesel cars cost more in maintenance but better in fuel efficiency. Diesel cars have those filters and stuff. If not mistaken they use more engine oil also. Tambah lagi, ini is turbo diesel...the turbo part also need maintenance.

Previously I was told diesel car cost 1.5x to 2x more compared to petrol car in terms of maintenance.

If you travel a lot diesel might suit u since it gives best FC and torque haha. Downside is the maintenance cost and euro 5 availability.

You will only regret if your new car not come on time before Sep 2018, before SST implementation.

2.2d here.. No regrets..

Haha.. I know the feels.. Which is why I always recommend those who want the 2.0 to never test the other engines cuz if you do, the difference in power delivery is instantly noticeable.. We almost got the 2.0 GLS cuz can remap later plus it's sufficient for city driving (we being city people).. Unfortunately or fortunately, after a single back to back test drive. We knew, we had to spring for the diesel.    It's basically in sports mode all the time. But without the whiny high revving sounds of the petrol engine.. Just be sure to scout out Euro 5 stations around you or along regular routes.
Quite possible.. .. I do know that there are after market remapping + mods that can be done to any of the engines to boost performance and fc.. Not stickers yeah.. .. Of course, best to wait till after warranty for such.
On another note, I believe I've figured out the Auto display and instruments cluster lighting issue. There's a thin stalk beside the info lcd, that was previously in the "out" position...need to push it back it and voila, the auto dimming now works on auto, day and night.