Mine came with 19inch wheels.
I was wondering if it is possible to put 17inch wheels.
Would that cause any issue in the suspension?
More importantly, can the car be programmed to accept 17 inch wheels so that speedo/transmission/ABS systems do not have any issues.
Thanks.

 

I have a knot in my stomach thinking you'll do that to an FSport Do you hate the ride?

 

Ride is fine.
I sometimes want to take the car to rough roads.
Don't want to ruin those beautiful 19 inch wheels haha.

 

Okay - I can accept that answer The 19s are more durable that you may think though. I drive through metro NYC often and in midtown Manhattan - I've hit some whopper potholes and lived to talk about it.

 

Oh ok. That's good to know then.
17s have meaty tires as well which was the reason I thought it would be good for country roads.
Having said that, I too did hit a few bumps and holes since I got the car but felt the suspension absorbed the shock better than my old car. The old car (14 years old) also had brand new OEM shocks that I installed a few years ago.
What tyres do you have? Mine came with Dunlop sport max - 235/40

 

While the Owner's Manual cautions against putting 19 inch tires on vehicles equipped with 17 inch wheels, there's no caution on the reverse size change direction. (What's the deal with Australian Owner's Manuals using Imperial units and American English spelling? I thought Australia uses SI units and British English spelling.)

If you use tiresize.com's tire size comparison calculator (chose the "Tire Comparison" tab and the "mm" units switch below the comparison table) and plug in 235/40R19 for size 1 and 215/55R17 for size 2 and click the Calculate button you'll find the 17 inchers will require 2 additional rotations over what 19 inchers require to travel 1 km. The diameter of the 17s is 3 mm less than the 19s which is less than the diameter difference you get the acceptable wear range of the 19s (or any car tire). If you look at the "Speedometer Error" table you'll see the error is in tenths of a km/hr slower.

If your ES250 F Sport is equipped with navigation there is a "Tyre change calibration" that will automatically readjust the navigation system's tire circumference value that it uses to determine position when GPS signals are temporarily unavailable. If I've gotten the correct Australian navigation multimedia owner's manual, the menu chain on the center screen should be Setup -> Navigation -> Detailed navigation settings -> Calibration -> Tyre change.

 

Mine came with Michelins that are long gone. Goodyear Maxlife Assurance now and they are wearing great.

 

The base ES comes with 17” wheels, so yes, you can 100% put them on your F Sport. The brakes are the same across all trims.

 

I'm totally with you on your thinking! In fact according to Tirerack.com I can put 16" wheels on my ES350 which I plan to do at some point. Just say "NO" to low profile tires

 

For tyre(tire) lol sizes, we still use inches when we are buying them from tyre shops in AU.
Spelling should be tyre but I spelt that as tire because I know most here are from the USA.
For the owner's manual though, they should have fixed it.
This isn't the first time I see a word spelt as American English in a owner/user manual in Australia whereas it should have been for British English like Centre vs Center haha.