notkHOi

Hello all,

I just bought a GS430 01 recently, and looked up the stock tire size for 17s. They are 235/45/17. The tires on my car now are 225/55/17. I do not know anything about tire sizes and am new to this. Can I keep these on? What advantages or disadvantages do I get with each change in size? What is allowed for my stock 17 rims.

I may be looking to replace these tires due to noise, but am unsure of which size to get. Any input would be appreciated. Thanks.

Neo

iTrader: (3)

The current setup on your car has a larger outer diameter than stock but it is about the same as someone running 20s. So you are not way out there. It also has a larger sidewall which will give you a softer cushier ride but will also have more flex and thus reducing handling. It has a smaller width so there is less of a contact patch, reducing some noise but also reducing handling, stopping, and power (for launches). Your speedometer (and thus also the odometer) will be slightly off.

I realize I say more this and reducing that but no hard numbers. That is I don't know the degree to which the difference affects the car. Some may be barely noticeable while others are apparent.

Bottom line, if you like the ride, it is OK to stay with it for now. You are not so far out that it is bad. Like I said, most people running 20s or 19s with the fat setup is about where you are. If you are concerned, then just change them out with the stock size when these are ready to go.