Tyre Upgrade Maruti Swift

I want to upgrade the tyres to 185/70R14 but worried if that will damage the suspension or have adverse effect on fuel economy.

Also what tyre brand is best ?

thats probably the best upgrade for the standar stock 165/80's, wider tyres doesn't neccessarily mean worse fuel economy, it also depends upon the softness of the tyres so unless you're using performance tyres..such an upgrade won't affect it too much, suspension comes under question when you're using wheels of a different offset so don't be worried on that account either, good known brands are yokohama/bridgestone