2018 Chevrolet Colorado Wheel Interchange

2018 Chevrolet Colorado Wheel Fitment Guide

Known OEM Fitment For 2018 Chevrolet Colorado

The values below reflect data provided for at least one 2018 Colorado configuration. Wheel and tire specs can vary by trim, package, and market. If something is missing or appears inconsistent, use the on-page calculator and verify against your door-jamb tire placard, owner manual, and GM service information.

Note: The wheel diameter shown as 17 in and the tire rim diameter shown as R16 are inconsistent when taken together, which likely indicates different OEM setups across trims. Many trucks came with different factory wheel and tire packages. Confirm your exact stock size from your door placard or by entering your truck in the calculator and comparing to OEM documentation.

How To Use The Wheel Interchange Calculator

The calculator lets you compare a donor wheel-tire setup to your 2018 Colorado and test custom sizes for clearance and diameter changes.

• Step 1 - In Wheels from select the donor vehicle or manually input its wheel and tire specs. In Installed on choose 2018 Chevrolet Colorado.
• Step 2 - If you do not know your exact OEM size, use your door placard to enter your current tire size and measure or look up your wheel specs. If your placard differs from the table above, trust the placard for your specific truck.
• Step 3 - Use Custom wheel size to try different rim diameter, width, and offset. Use Custom tire size to adjust section width and aspect ratio. The tool will update tire diameter when you change rim diameter.
• Step 4 - Review inner clearance and outer poke changes versus your current setup, plus the tire overall diameter difference. Aim to keep overall diameter within about plus or minus 3 percent of stock to minimize speedometer and ABS impact.
• Step 5 - Check brake caliper clearance and fender clearance visually on the truck before driving, especially at full steering lock and full suspension compression.
• Step 6 - Save or print your results and verify part numbers with the wheel manufacturer and OEM sources before purchasing.

Fitment Checklist Before You Buy

• Bolt pattern - Wheels must be 6x120.
• Center bore - The Colorado hub is 66.9 mm. Aftermarket wheels with a larger bore will need 66.9 mm hub-centric rings. Wheels with a smaller bore will not fit.
• Offset and backspacing - Compare your candidate wheel to the known ET 33 mm and 5.3 in backspacing example and check clearance to struts, upper control arms, sway bar links, and inner fenders.
• Brake clearance - Verify spoke and barrel clearance to front calipers. Some wheel designs with the same diameter can still foul the caliper shape.
• Tire diameter - Keep total diameter within about plus or minus 3 percent of your OEM tire diameter to maintain speedometer, ABS, and transmission shift behavior.
• Load rating - Wheel and tire load indexes must meet or exceed the truck’s GAWR and door placard requirements, especially for towing or payload use.
• Lug hardware - Thread is M14 x 1.5. Seat type must match the wheel design. Do not mix mag, spherical, or conical seats. Verify shank length where applicable.
• TPMS - If equipped, sensors must be compatible and relearned per GM procedure after wheel or tire changes.
• Spacers - If required for clearance, use hub-centric spacers with proper engagement and ensure sufficient thread engagement or install longer studs. Recalculate effective offset in the calculator.

Plus Sizing And Common Upgrades

Plus sizing raises wheel diameter and typically widens the wheel while selecting a lower-profile tire to keep overall diameter close to stock. Because factory packages varied, verify your starting size on your truck, then:

• Increase rim diameter in 1-inch steps in Custom wheel size and shorten the tire sidewall in Custom tire size to hold overall diameter within plus or minus 3 percent.
• Track inner clearance as you change offset and width. More positive offset pulls the wheel inward, improving fender clearance but risking suspension rub. Less positive offset pushes outward, which can contact fenders.
• For off-road oriented setups, test wider tires for sidewall support at reduced pressures. Confirm clearance at full droop, full bump, and lock-to-lock steering.
• If you change scrub radius significantly, expect heavier steering feel or kickback. Keep offset changes conservative and validate with a test fit when possible.

Installation Tips

• Preparation - Park on level ground, chock wheels, and use jack stands at approved frame points. Refer to your owner manual for lift points.
• Hub cleaning - Wire-brush the hub face and lightly remove corrosion. Ensure the wheel mounts flush. If using hub-centric rings, seat them fully against the wheel bore.
• TPMS handling - Transfer or install compatible sensors. Install new seals as required. Perform a TPMS relearn after installation.
• Mounting - Hand-start all M14 x 1.5 lug nuts to avoid cross-threading. Tighten in a star pattern in stages.
• Torque - Use a calibrated torque wrench and the torque value from your owner manual or GM service information for your VIN. Re-torque after 50 to 100 miles.
• Final checks - Turn the steering wheel lock-to-lock and compress the suspension to check for rubbing on liners, pinch welds, brake hoses, and upper control arms.
• Alignment - Any change in width or offset can alter scrub radius and track width. Have the alignment checked after fitment changes.

Tools And Helpful Supplies

• 1/2 inch drive torque wrench
• M14x1.5 lug nuts - verify seat type for your wheels
• TPMS relearn tool for GM
• Wire brush set for hub cleaning

FAQs

• What is the bolt pattern on the 2018 Colorado?
  6x120 according to the known OEM data above.

• My door placard tire size differs from the table. Which is correct?
  Trust your truck’s placard and owner manual for your exact trim. The table reflects a known configuration, but 2018 Colorado packages varied. Use the calculator with your placard size as the baseline.

• Do I need hub-centric rings?
  If your aftermarket wheel’s center bore is larger than 66.9 mm, use rings to fit 66.9 mm. If the wheel bore is smaller than 66.9 mm, it will not fit the hub.

• Can I run 16-inch wheels?
  Some 2018 trucks used different OEM packages, and the provided data includes a 16-inch tire entry alongside a 17-inch wheel entry. Because brake package and trim affect minimum wheel diameter, confirm using your VIN, the door placard, and a physical test fit or caliper template from the wheel manufacturer.

• What lug nut thread and seat type does it use?
  Thread is M14 x 1.5. Seat type depends on the wheel. Verify the correct seat profile for your specific wheel to ensure proper clamping.

• What offset range works on the 2018 Colorado?
  The known OEM example is ET 33 mm. A safe range depends on wheel width, tire size, and brake clearance. Use the calculator to compare inner and outer clearance against your current setup and physically test before driving.

• What is the correct torque for the lug nuts?
  Refer to your owner manual or GM service information for your VIN. Do not guess. Re-torque after 50 to 100 miles.

• Will my TPMS work with new wheels?
  Yes if you use compatible sensors and perform the relearn. If using new sensors, match the correct frequency and protocol for your truck and follow GM’s relearn procedure.

• Can I use spacers to clear suspension components?
  Only if necessary. Choose hub-centric spacers and confirm you have adequate thread engagement or longer studs. Update the effective offset in the calculator to evaluate clearance and fender poke.

Always verify final fitment with the calculator, your vehicle’s placard, and OEM documentation before purchasing or installing wheels and tires.