Mazda 121 III (JASM, JBSM) Wheel Lug Pattern, Offset, and Center Bore Reference
The Mazda 121 III (JASM, JBSM) features specific wheel lug patterns crucial for selecting compatible wheels and rims. Accurate information on lug count, pitch circle diameter (PCD), offset ET, and center bore ensures proper fitment and safe wheel mounting.\n\nThis model typically uses a 4x100mm wheel lug pattern, a standard specification that defines the number of lugs and the diameter of the circle passing through them. The offset (ET) values and center bore measurements vary by production year, influencing the wheel’s positioning and hub compatibility.\n\nOur year-sorted Mazda 121 III wheel lug pattern catalog offers precise reference data to help users identify the correct rim sizes and mounting parameters. This resource aids in selecting wheels that maintain factory fitment standards and optimize vehicle performance and safety.
| Make / model / trim | Year | Tire | Rim width (in) | Rim diam. (in) | Bolt pattern | Offset ET | Bore DIA | Mounting |
|---|---|---|---|---|---|---|---|---|
| Mazda 121 III (JASM, JBSM) 1.25 | 2003 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.3 | 2003 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.8 D | 2003 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.25 | 2002 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.3 | 2002 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.8 D | 2002 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.25 | 2001 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.3 | 2001 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.8 D | 2001 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.25 | 2000 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.3 | 2000 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.8 D | 2000 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.25 | 1999 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.3 | 1999 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.8 D | 1999 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.25 | 1998 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.3 | 1998 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.8 D | 1998 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.25 | 1997 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.3 | 1997 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.8 D | 1997 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.25 | 1996 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.3 | 1996 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
| Mazda 121 III (JASM, JBSM) 1.8 D | 1996 | 165/70R13 | 5 | 13 | 4×108 | 43 | 63.3 | M12*1.5 |
FAQ
- What is the typical wheel lug pattern for Mazda 121 III (JASM, JBSM)?
- The typical wheel lug pattern is 4x100mm, with four lug nuts evenly spaced on a 100mm diameter circle.
- Why is wheel offset (ET) important for Mazda 121 III?
- Wheel offset affects the alignment and clearance between the wheel and suspension components, ensuring proper fit and vehicle handling.
- How can I find the correct rim size for Mazda 121 III wheels?
- Refer to year-specific Mazda wheel lug pattern catalogs that include rim size, offset, and center bore data tailored to Mazda 121 III (JASM, JBSM).
Tire size calculatorShow
Compare two tire sizes — diameter, speedometer error, and clearance change.
| Size 1 | Size 2 | Diff | Diff(%) | |
|---|---|---|---|---|
| Diameter | 25.0" | 25.4" | 0.5" | 1.89% |
| Width | 7.7" | 8.5" | 0.8" | 10.26% |
| Circumference | 78.4" | 79.9" | 1.5" | 1.86% |
| Profile height | 5.0" | 4.2" | -0.7" | -15.08% |
| Turnover per mile | 807 | 793 | 14 | -1.73% |
| Clearance | - | - | +0.2" | - |
Speedometer Error
(First wheel OEM size)
| Reading | 20 mph | 30 mph | 40 mph | 50 mph | 60 mph | 70 mph | 80 mph | 90 mph |
|---|---|---|---|---|---|---|---|---|
| Actual | 20.4 | 30.5 | 40.7 | 50.9 | 61.1 | 71.2 | 81.4 | 91.6 |