I have a 2023 IS 350 with the BBS wheels. I'm looking to add 15mm spacers in the front and 20mm in the back. Do I need bolt-on or slip-on spacers? I'm looking to purchase ****** spacers. I'll include the link to the ones I think will fit.

https://www.ebay.com/itm/16597087250...&ul_noapp=true

 

slip on and longer bolts. I just put these on mine.

 

Nice! Are those 15mm and 20mm?

 

yes
same brand you listed

 

I put some pictures up a few days ago, search it.

 

Did you notice any negative camber in the rear?

 

not really, that s such a small spacer I doubt you see any.

 

I'd get an alignment afterwards, just to see what the specs are.

 

Did you have to install the included extended lug bolts before you installed these?

 

Yes, it s a must. the OEM bolts will be shorter. You won t get enough thread engagement to be safe. The longer bolts are the addition length of the spacer width. So when you get the kit with the rear spacers being 5MM thicker than the fronts, the bolts for the rear will also be 5MM longer than the front bolts in the kit. Keep that in mind and don t mix them up.

 

Thanks for replying so quickly. That's what I figured. Another question I have is if you take the spacers off, will the extended lug bolts still work or do you have to install the original ones again?

 

I d be afraid the longer bolts might bottom out in the hole. I m not sure but I woundnt. I put the OEM bolts right in the trunk.