Guys,

I have finally caved in, ditched my stock "pie plates" and got a set of aftermarket wheels. However, I chickened out and went with a set of 18's instead of larger wheels because I use my SC430 as a daily driver and comfort is my number 1 priority. Sorry to let a lot of you down for not going with 19s and 20s...

That being said, I've got to pay the consequences of chickening out, as the 18s look only slightly better than stock ones. Also, they're tucked in like my stock wheels.

Here are the specs:

Work Ryver old school mesh wheels

18 x 8.5 - 38 offset fronts
18 x 9 - 38 offset rears

I am currently running stock tires on them and I am wondering if anyone could please suggest spacers in appropriate width for my rear tires. I was thinking about using the H&R 25mm spacers from my SC400 for the rear tires. But then one tire shop told me that they're way too wide for my setup, while another tire shop said I can go wider.

Also, having riding on the stock suspension, are the rear tires going to rub or hit the inner fender if I go over a bump?

Any help would be great appreciated.

Jon

 

Any help?

I would appreciate any advice.

 

Look at Henry's (rominl) sticky ( SC430 wheel fitment) : https://www.clublexus.com/forums/sho...d.php?t=184865
and - http://www.lgwnorcal.com/articles/wheelfitment.html

The stock offset is 45mm for both F & R. If the wheels have 38mm offsets (17mm less than stock) and you add another 25mm with spacers, your effective offsets will be 13mm (38mm - 25mm). I think I did the math correctly.

Look at Henry's info to see what the most aggressive offsets are shown. I think you're way past those.

 

Jon,

You could use a 5mm spacer up front, and as for the rears I would think a 20mm spacer would work just fine, you could try to 25 but I think you would rub on the fender lip a little.

As a reference here are the specs for my wheels; I have about 1-3mm to go until the tire hits the fender lip.

20x8.5 +35 offset for front,
20x8.5 +12 offset for the rear.

 

Hmmmm.... clearly I din't take into account the wheel width (duh...) and was comparing them to my 9" fronts and 10" rears. I should always remember to use the Wheel Offset Calculator ( http://www.1010tires.com/WheelOffsetCalculator.asp ).

So, if you add 5mm spacers to the front of those wheels, your effective front offset is (38 - 5) 33mm. So your Inner Clearance is 6mm MORE, and the outer edge of the wheel EXTENDS an extra 18mm over stock. Tommy, did I finally get this right?

Then for the rears - add 20mm spacers give you an effective offset of (38 - 20) 18mm. From the Offset Calculator, the Inner Clearance is 14mm MORE, and the outer edge of the wheel EXTENDS an extra 40mm over stock.

This sound more reasonable. I know my rears are 44mm extended out from the stock position, and I wouldn't go any further. My fronts are 30mm further out from the stock ones.

I may take remedial math next summer.....

 

Honestly, I am not the best with offsets but what you described is pretty much what I had imagined in my head. With my current offsets I still have some room to go and do not rub, so I think Jon should be alright with that setup, I personally would not want to run spacers, but if you do just make sure you buy good quality stuff and also pick up extended wheel studs.

 

i wouldn't be scared to pick up 20s if i were you. the ride was actually smoother when i went from stock runflats to after market 20s. mine is a daily driver and i have no complaints. but get plenty of compliments on my wheels.

 

Thank you guys once again.

If I am learning this correctly, I should be okay with 15mm-20mm spacers for the rear wheels?

For those who have spacers with stock suspension, will the rear shocks travel/bounce to a point that causes the tire to have contacts with the inner wheel fender?

Thanks again!

Jon