Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Parameter Setting Procedure When Tire Size Is Changed
2010 Mazda 3 L4-2.5LSECTION Parameter Setting Procedure When Tire Size Is Changed
PARAMETER SETTING PROCEDURE WHEN TIRE SIZE IS CHANGED
CAUTION:
- If the wheel and tire sizes are changed, a discrepancy with the speedometer needle whereby it exceeds the allowable range could result in a malfunction. If the wheel and tire sizes are changed, perform the following procedure to change the tire size parameter setting.
- The same parameters should be set in "Tire dimension", "Tire Circumference", and "Tire Size".
NOTE:
- Use the IDS (laptop PC) because the PDS (Pocket PC) does not support these functions.
1. Connect the M-MDS to DLC-2.
2. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
- When using the IDS (laptop PC)
- Select "Module Programming".
3. Select the items from the screen menu.
- Select "Programmable Parameters".
- Select "Tire Size".
4. Select an item name, and then select the option.
- Select "Tire Size".
- Tire dimension (195/70R15, 205/50R17, 195/65R15, 205/55R16, 225/40R18)
- Tire Circumference (195/70R15, 205/50R17, 195/65R15, 205/55R16, 225/40R18)
5. Select the items from the screen menu.
- Select "Programmable Parameters".
- Select "Tire Size/Axle Ratio".
6. Select an item name, and then select the option.
- Select "Tire Size/Axle Ratio".
- Tire Size (195/70R15, 225/40R18, 195/65R15, 205/50R17, 205/55R16)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.