Copying this information here from another thread:
Originally Posted by Chewbacca
I was recently forced to upgrade the 13" OE alloys on my Lancer to 14" alloys because the stock tyre size 175/80/R13 is longer available. It took me 3 months to find everything to my liking. My ultimate goal was to NOT deviate too much from OE specs.
old worn-out tubed tyre Bridgestone S248 175/80/R13 = 9230 gms
butyl rubber tube = 980 gms
Mitsubishi OE 13*5J alloy wheel = 5500 gms
OE steel lug nuts (4) = 140 gms
Total weight per wheel = 15.85 kg
all above replaced with ....
New tubeless Turanza ER60 185/70/R14 = weight 8640 gms
Dzire OE 14*5.5J alloy wheel = 5900 gms
Forged Aluminium Lug Nuts (4) = 55 gms
Total weight per wheel = 14.59 kg
Thus weight reduction per corner = 1255 gms
Total weight reduction of car = 5020 gms
This is unsprung weight and they say it multiplies 7 times and adds to the sprung weight when the car is in motion. So theoretically the car is now lighter by 35 kg !!
Now sir, can I say with authority that 0 -100 and 100 - 0 is sooner than before?
I haven't checked yet.