Study a wheel backspacing chart & learn difference between + offset wheels vs. -
The higher the number + (positive offset) the further inward the wheel will sit.
A - wheel (negative offset) will move outwardly,,,more common on lifted trucks or wide body conversions.
+22 will sit 10mm further inward than a +12 of same width wheel.
Not all wheels of same spec will clear larger brakes.

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What would be the best tire size combo for these specs?

Base Z
18x9.5 +22
18x10.5 +15

Looking for both specs in a slight stretch, and a no stretch at all.

I have a stock 2011 roadster sport touring. 19 inch rays, only difference is I have 20mm spacers all around.

What are the biggest/widest tires for front and rear I can use and still have no rubbing.

standard tires for those widths are 245/35 front and 275/30 rear. VERY subtle stretch.

Iv seen people go up to 275/35 up front and 305/30 in the rear for a really meaty look though. You have a lot of options with those wheel widths.

I think you might be confused with the 19's. For an 18, you could do a 245/45-275/40 or a 275/40-315/35.

What is your ride height & camber setting?


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nah, Im looking at width..sure you can do 40/45 side wall, just as you can do 30/35 sidewall. Depends on the ride height desired

19x9.5+15 with 245 40 19
19x11+8 with 285 35 19

Hello Everyone,

I just purchased new wheels for my 2014 370Z Touring and need help getting the right size tires as I'm on Swifts Spec R lowering springs.

The specs are listed below:
Wheels: Work Emotion T7R
Front: 19x9.5 +25
Rear: 19x10.5 +22

Should I go with:
255/35/19 (F) and 285/30/19 (R)
255/35/19 (F) and 295/30/19 (R)
255/35/19 (F) and 305/30/19 (R)
265/35/19 (F) and 305/30/19 (R)

Thanks in advance!

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R33 GT-R 17x9 30mm offset will fit on the rear with sport brakes. It's about 1-2mm clearance

Hello I was interested in ESR's RF1 in 19x9.5F 19x10.5R 22 all around.
Would this work with 265 or 255/35/19 front tires and 285 or 295/30/19 rear?

Currently stock 2013 base suspension no bbk but want to in the future with akebono or brembos.
For suspension I'll be going either swift or eibach with spl rear camber arms with hotchkis or eibach or whiteline sway bar

Theyll fit with those tires
265/35/19 and 305/30/19 works

With that offset and 265/35 front and 305/30 rear it won't ever rub and won't look buldged?

Won’t rub in rear & depending on tire mfg. could be a tad bulged on wheels,,,but they’re within proper rim width spec.
+22 offset on both front/rears with 1” stagger (9.5/10.5) will leave the rears sunk in a bit,vs. the front...about 10-15mm pending on camber setting.