I had a day off yesterday, so I decided to grab my NF210 and bring my car to the shop to get them installed. I head over to EXACT motorsports since they were local, and a reputable shop. After the install the car looked really clean. Couldn't been happier with the job. When I got home, I couldn't wait, had some iforged wheels (20x8.5 N 20x10)I picked up, and decided to put it on lastnight. This morning drove the car out to take some pics to share with you all, I get a light on my dash. At first I thought it would have been the TPS sensor, since the new wheels don't have them on, but it wasn't. It said "check 4WD". I was wondering if anyone came across this problem with there staggered, lowered AWD. Any help is great full. If worse comes to worse, I'll put on my oem equipment back on...

 

I forgot to mention tire size

F: 245/30/20
R: 275/30/20

 

I think your AWD system does not like staggered wheels, I could be wrong though

 

F: 245/30/20
R: 275/30/20

??? that's wrong tire size. front and rear different diameter, off by 1". i wonder if that's why the awd system error comes up

 

I've never had that issue but your tire sizes are way off. Your tire sizes have tripped the computer. See image 1 of 2 below.

 

See image 2 of 2 below. Keep in mind, this applies to the 2006 GS300 AWD. Although the year and engine sized is different I believe the error code is the same.

 

Approximately how many miles did you travel until the computer tripped? I recommend removing the wheels and going to a Lexus dealer to reset it. Your car may be running only on 2WD until you get it fixed. This will prevent the center diff from being damaged.

 

Sorry guys, typed the wrong tire size. The correct one is
F:235/30/20
R:275/30/20
Thanks again Nick for the help. It was nice meeting/talking to you today...

 

still that's totally wrong setup

you go with 245/30/20 and 275/25/20. the profile ratio is what killing your setup

 

I thought you were gonna complain about the vibration...are you getting any vibration w/ the AWD and drop?

 

yeah, try to match the rolling diameter. i don't think other members here had the same issue w/ staggered wheels. gl w the fix.

 

The ride looks clean.. It might just be the tire problems everyone is suggesting.

Did you feel any vibrations? I heard that there are no specific springs made for AWD yet...

 

Planning to replace my tires on the rims, and yes I do feel a vibration, but it's not as
bad as everyone makes it seem. Plus you only feel the vibration at a complete stop. Once you let the brake go, the vibration goes away.

 

Did you even consider a tire size calculator prior to purchasing different size wheels for an AWD vehicle? if not for future reference google search the phrase and you will sav yourself a lot of headaches.

Its good to know that if your tire diameter ratios are out of spec the car just switches to 2WD mode.

 

does the car give any notification/confirmation when it's operating in strictly 2WD mode?