Mini-Z Wheel Offset Calculator
Fitting an AutoScale body to your Kyosho Mini-Z? Work out the exact wheel offset to run when you change wheel width — front and rear — so the wheels sit right and don't rub.
The fitment rule
Every AutoScale body lists a recommended wheel width + offset. Add them to get a target total. To run a different width, hold that total constant — change the offset the opposite way. This calculator does that for you: enter what the body calls for, pick the width you want, and it returns the offset to buy.
Front
The body recommends
Target total = 10 mm (8.5 + 1.5)
I want to run
Rear
The body recommends
Target total = 11 mm (11 + 0)
I want to run
Front
1.5mm
Run Narrow 1.5 wheels
Exact match — this keeps the same fit.
Rear
0mm
Run Wide 0 wheels
Exact match — this keeps the same fit.
- FrontRear
- Body spec
- Narrow 1.5
- Wide 0
- Target total
- 10mm
- 11mm
- Ideal offset
- Narrow 1.5
- Wide 0
Wheelbase & motor-mount reference
Offset makes the wheels sit right; wheelbase is what makes the body physically fit. Match your motor mount / rear pod to the body's wheelbase first.
| Code | Wheelbase | Typical mount | Character |
|---|---|---|---|
| S | 86 mm | RM, HM | Shortest — twitchy, hardest to drive |
| M | 90 mm | RM, HM | Short, nimble |
| L | 94 mm | RM (also HM, MM2) | Common scale wheelbase |
| LL | 98 mm | MM (also MML, MM2) | Most stable — beginner-friendly |
| 3L | 102 mm | MM / LM (also MML, MM2) | Very stable, slower to rotate |
| 4L | 106 mm | MM (also MML) | Longest — niche |
Heads up: the mount letters (RM / MM / LM / HM) are used inconsistently — they describe either the motor's front-to-back position or its height, and even sources disagree on what some stand for. Trust the wheelbase in mm, not the letter. Full guide to Mini-Z rear pods, wheelbase & fitting a body →
Changing pods? The exact parts, by pod type
When a body needs a different wheelbase, you're really changing the rear pod. These are Kyosho's own part numbers for what makes up each RWD pod — from their official pod reference cards.
| Pod | Wheelbases | Diff gear | Motor case | Rear spring |
|---|---|---|---|---|
| RM | S / M / L (changeable) | MZ207 (opens in new tab) | MZ216B (opens in new tab) | MZW213 (20 mm) |
| MM | LL (98 mm) | MZ207 (opens in new tab) | MZ215B (opens in new tab) | MZW202 (opens in new tab) (23 mm) |
| LM | 3L (102 mm) | MZ302 (opens in new tab) | MZ305B (opens in new tab) | MZW202 (opens in new tab) (23 mm) |
| HM | S / M / L (changeable) | MZ207 (opens in new tab) | MZ156B (opens in new tab) | MZW213 (20 mm) |
All four pods share the same suspension-parts set: MZ403B (opens in new tab).
AWD (MA-020) conversions
- MA-020 tread, narrow → wide: MD202 (opens in new tab) + MD203 (opens in new tab) + MD205 (opens in new tab)
- MA-020 wheelbase, M (90 mm) → LL (98 mm): MDW100-04 + MDW205B (opens in new tab)
Part-number links go to AMain search and are affiliate links (ad). Unlinked part numbers aren't stocked there.
How to use this calculator
- • Find your AutoScale body's recommended width + offset (printed on the box/manual, e.g. "F: Narrow +1.5 / R: Wide −1.0").
- • Enter those for the front and rear panels above.
- • Pick the wheel width you actually want to run.
- • The calculator returns the offset to buy, and flags it if no factory wheel reaches that fit.
- • Wheel widths: narrow = 8.5 mm, wide = 11 mm. Available offsets — narrow: 0 / 1.0 / 1.5 / 2.0 / 2.5; wide: −1.0 / 0 / 1.0 / 2.0 / 3.0.
AI Feedback on Your Setup
Talk with an AI Mechanic that actually knows your car's exact setup, anytime, anywhere.
More RC Calculators
Free RC tools to dial in your car between rounds.
Drivetrain
RC Gear Ratio Calculator
Pinion + spur + internal ratio → final drive ratio, rollout, and chart of nearby combos.
RC Speed Calculator
Motor Kv, battery voltage, gearing, and tire size → top speed of any electric RC car.
RC Pinion Recommender
What pinion should I run? Pick your car and motor; get a starting pinion from real race setups, with the range racers run.
RC Gear Ratio Chart Maker
Build a printable pinion/spur chart for any class: gear ratio (FDR) or rollout (mm). 1/10, 1/12 pan, 1/8 presets included.
RC Crawl Ratio Calculator
Total motor-to-wheel reduction for crawlers and trail trucks: pinion, spur, transmission, axle and portal gears.
RC Battery Runtime Calculator
How long will your LiPo last? Estimate runtime by class and driving style.