Good morning ladies and gentlemen. I need some advice.. I am switching to a squared setup from a staggered setup. I am getting 20x9 with a +35 offset all around. I know I will not need spacers for the front. However I will need spacers in the rear of the car. I have a 13 Lexus GS350 F sport. I am trying to figure out what "mm" spacers will I need to have that "flushed" look. I don't want to "rub" on the quarter panel but I would like it as close as possible.. 10 mm? 15mm? 5mm? 3 mm?? I am not 100 sure on what to choose.

Thank you for the advice ahead of time..

What I am thinking of getting.

 

Here's a few shots of a 19x9 +40 I had for a few months. It was pretty flush for me so an extra 5mm should be even more so without sticking out. The first photo was before lowering and also most other photos have the fender extensions. No spacer is needed in my opinion for your size.

If you must go with spacers, I would recommend H&R # 3065602. Those are the 15mm bolt on versions and I like them a lot. Any smaller and you will need extended studs since 15mm is the minimum for the bolt on version (as long as your wheels have the OEM style pockets on the inside to accommodate the stock studs).









The fronts will be perfect. That's what I have now with 19x9 +50 (RC-F OEM wheels) with 15mm spacers.

 

That makes sense.. Since I have a lower offset then you then the rim will stick out more. Am I correct?

 

Yes, a 35mm offset will stick out 5mm more than a 40mm.

 

I just noticed something.. I see you have 275's on a 19x9 rim in the rear...

Could I do my 275/30/20 on a 20x9 rear rim?????

 

Hey BM, while we're on the wheels subject, could you snap some quick photos of ur driver's side rear wheel well? Just a pic of in between the rear tire and rear bumper should do. I just want to see how to splash shield / fender liner sits cause mine is kinda weird.

 

That should work, its within the spec. I think the 275/35 were a bit too meaty looking for my 19x9 setup but that's personal preference. I much prefer the slight stretch of the 275 on the 10" rear wheels I am running now.

 

you changed rims since that photo... Nice. Any pics of the new setup?

 

Here's with the RC-F wheels:

 

You can stuck up few washers on hub to determine the desired thickness.

 

You have a 9" front and a 10" rear correct? What tire sizes are you running now?

 

Yup, 245/40 and 275/35.

 

What do you think about 255/35/19 and 295/30/19? Thanks.

 

It's a bit difficult to get in there but here's what I got:

 

I'd prefer my combo over that for a few reasons:

The overall diameter of the 255/295 combo is 0.6" smaller which creates more of a gap visually and less cushion from bumps.

Up front, the 255 would be fine with spacers but without, it will be extremely close if not making contact with the inner wishbone.

Out back, the 295 is a big tire, adding unnecessary weight and creating a clunky look in my opinion. The slight stretch of the 275 gives a more svelte look for this type of car. I'd also be concerned about contact with passengers or big bumps with more width, it's already pretty close:



Going back to the OP, if you haven't bought the wheels yet, I would recommend sticking with a 19" wheel since 20" is a bit large for this car and you'll get better ride comfort and fitment with a 19" setup.