I am not too good at offset and tyre size....
Found a set of rims of trademe.
4x100
Offset - seller not sure,but believes its 35 or 45
Tyre size is 195/45/16
Have been trying to use this guide to assist, but it confuses me - the rims will be going on a Vitz.
WHEEL BOLT PATTERN PCD = 4 x 100mm
CENTRE BORE = 54.1mm
OEM wheel sizes, offsets (ET), and tire sizes (diameter in inches):
14x5, ET45, 175/65/14 = 23.0
15x5.5, ET45, 185/60/15 = 23.7
16x6, ET51, 195/50/16 = 23.7
17x6.5, ET51, 205/45/17 = 24.3
TRD Option 18x7.5, ET42, 215/35/18 = 23.9
With stock suspension, you may safely fit many tires from 23.0 to 24.3, +/-3%.
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Recommended offsets (ET) and tire widths (mm):
ET35+ = 175-185
ET38-ET40 = 175-195
ET42-ET45 = 195-205
ET45+ = up to 215
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Here is an excellent and easy to use wheel and tire fitment guide:
http://www.rimsntires.com/specs.jsp
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Optional tire sizes (diameter in inches):
*Commonly recommended replacement sizes
Fitment depends on wheel width, offset, and suspension mods.
175/65/14 = 23.0*
185/65/14 = 23.5*
195/65/14 = 24.0
195/60/14 = 23.2*
205/60/14 = 23.7*
215/60/14 = 24.2
185/60/15 = 23.7*
195/60/15 = 24.2*
195/55/15 = 23.4*
205/55/15 = 23.9*
195/50/15 = 22.7
205/50/15 = 23.1* (Most lowered applications)
215/50/15 = 23.5
225/50/15 = 23.9
195/50/16 = 23.7*
205/50/16 = 24.1*
215/50/16 = 24.5
195/55/16 = 24.4
205/45/16 = 23.2* (Most lowered applications)
225/45/16 = 23.9
205/45/17 = 24.3*
205/40/17 = 23.5* (Most lowered applications)
215/40/17 = 23.8
215/35/18 = 23.9*
225/35/18 = 24.2
205/40/18 = 24.4
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Staggered fitments:
1. Staggered offsets are common in Japan. These applications even out fitment front to rear and are purely for appearance. Tire size generally remains constant front to rear. Staggered offsets preclude tire rotation. Recommended maximum stagger is 10mm.
Example: FR, ET45//RR, ET38
Example: FR, ET42//RR, ET35
2. Staggered tire widths are less common, especially on front wheel drive cars. These applications even out front to rear fitment. They are not recommended for the track, but as an appearance option they are safe under normal driving conditions. Staggered tire widths preclude tire rotation.
Example: FR 205/55/15//RR 225/50/15
Example: FR 205/50/16//RR 215/50/16
Example: FR 205/40/17//RR 215/40/17
3. Wheels spacers are another option to even out fitment front to rear. Maximum recommended rear spacer width is 10mm. Tire rotation is still possible.
Example: FR, ET42//RR, ET42 with 5-10mm spacer