only 5% extra fuel consumption at highway speeds.
The cons: 30% more fuel consumption in city, slower take-off, way more fuel consumption at take-off, when going over pot holes the suspension feels like it hits harder (maybe I should use lower air pressure? or higher?)
The bad news is that Kal Tire did a vehicle inspection and informed me that my rear brake pads are pretty much all worn out. They say the caliper is sticking. Jeez! I've only driven 38000km and need new rear brakes! No Way! I had a 17 year old big, heavy buick with 300000km and it still had the original rear pads and my Zuki needs new rears already. Something must be wrong. If anyone out there has had any problems with rear brakes; let me know. I called my suzuki dealership and they tell me its a wear and tear part and its not covered under warranty. Does anyone else out there have a dealership thats so hard up to fix problematic parts?
Can't say I didn't warn you on fuel consumption. I get very similar results, very much depending on how many accelerations to speed I need to do, like you said, highway is still pretty good, but city is very bad.
I run my tires at 30Psi all the time. It's effect on the petrol economy is very little, but I find the ride nicer. I've experimented with anything from 30 to 40 Psi, but found that over 35 would start to cause centre wear on the tires, so I find 30 to be much more comfortable.
In regards to your brakes, you said the caliber is found sticking. That would cause your wear.. Brakes are usually not covered by warranty since these are a wear item, that also needs to be maintained according to the specific conditions that YOUR car sees.
I for one, usually pop my drums when I swap my tires around, give the shoes a quick clean with an emory cloth and vacuum all the dust, and check for movement of all moving parts. Maintenance always saves you money in the end.