Alloy Wheels Upgrade Help

[james250]

I've got the OEM 17" wheels on my IS250 and i'm considering changing to some aftermarket rims preferably in black. I'm thinking 18" or dont mind 17". I have no idea how the rim measurements work, i want wheels that are direct fits and have the exact same fitting specs as OEM wheels. I dont want to have to use any kind of adaptors to correct the wheels.

Also, the OEM wheels have 245/45/17 at the back and 225/45/17 at the front, does this mean i need wider rims at the back? or just wider tyres?

Any suggestions of what wheels might look nice on the IS250?

Any help would be much great.

Thanks

[Exdee]

OEM Specs:

17 inch Wheels

PCD: 5 x 114.3

Offset: 45 all around

F alloy size: 17 x 8J

F tyre size: 225/45/R17

R alloy size: 17 x 8J

R tyre size: 245/45/R17

So basically we have a wider tyre in the rear. The width is the same for all wheels.

18 inch Wheels

PCD: 5 x 114.3

Offset: 45 F and 50 R

F alloy size: 18 x 8J

F alloy size: 225/40/R18

R alloy size: 18 x 8.5J

R alloy size: 255/40/R18

Staggered wheels with wider tyre at rear.

Both these specifications are quite conservative but if this is what you want then go for it. What colour is your car?

[james250]

Thanks for the OEM specs Exdee, my car is white hence why i'm considering black wheels.

[Tango]

Have a look through this lot to get a few ideas. http://www.clublexus.com/forums/is-second-generation/386719-2is-wheel-thread-index.html

Apart from the different manufacturers, I notice there's also a link specifically for 18" rims.

I had 19" rims on my IS250 SE-L 19x8.5 fronts and 19x9.5 rears, but the car was also lowered, otherwise it would have looked slightly odd..

[james250]

will these wheels directly fit the IS 250? http://www.wheelbasealloys.com/18_Inch_MSW_24_Matt_Black_Alloy_Wheels__5715

I am told they take 225/40/18 and also can take 245/40/18 for the back

[Exdee]

They wont. The key is the bolt pattern. You need 5 x 114.3.

From the same website:

18's that will fit your car

Staggered 18's that will fit your car

PS: Check bolt pattern for individual alloys because despite using these filters it seems to display some that wont fit your car

[james250]

They wont. The key is the bolt pattern. You need 5 x 114.3.

From the same website:

18's that will fit your car

Staggered 18's that will fit your car

PS: Check bolt pattern for individual alloys because despite using these filters it seems to display some that wont fit your car

Thanks for that. Would i need staggered setup wheels? would just having wider tyres at the back be sufficient just like the setup is with the 17" wheels?

[Exdee]

Staggered is recommended/desirable but I guess it depends on what you are trying to achieve. If you just want to change wheels then you should be okay with a non-staggered setup as long as you chose a wider tyre for the rear. If you want the car to have a better stance aesthetically than staggered is the way to go. Unless you lower your car I doubt you will achieve much as far as looks are concerned.

:)