I got a 2008 lexus is350 the with oem wheels, the front tires is 225-40-18 and rear is 255-40-18. The question is can I get different size so I car look more lower. The is all stock.

cheer
ippo

 

are you asking if you can lower the car by buying different tires, say 30-35 sidewalls and leaving everything else stock? Yes, overall the car will be lower but it won't look lower b/c the wheel gap will be about the same.

To close the wheel gap, you'll either need to change the suspension (springs, coilovers, or air). I guess you could always buy tires with larger sidewalls, but then it may look funny

 

Lower profile tires will only make the wheel well gap greater!

To lower the car, you need lowering springs or coilovers.

 

^^^^ yup... and cheaper to buy springs than a set of tires.