The 2018 Chevrolet Trucks Colorado sits in the modern midsize pickup segment where daily usability, light trail work, and trim-specific wheel packages all play a real role in tire selection. Unlike a one-size-fits-all classic truck application, this Colorado can use four different radial sizes depending on sub-model and wheel setup: 265/70R16, 255/65R17, 265/60R18, or 265/65R17. That makes the first decision less about brand loyalty and more about confirming the exact trim and rim diameter already on the truck. For owners comparing replacement tires, wheel compatibility, load capacity, sidewall style, and intended road or off-road use all deserve a close look.
Which Tire Size Is Right for The 2018 Chevrolet Trucks Colorado
The 2018 Chevrolet Trucks Colorado uses four primary tire sizes, and the correct one depends on the exact sub-model and wheel diameter. All four are radial metric sizes, but they span 16-inch, 17-inch, and 18-inch rims, so the first step is confirming the truck's trim and existing wheel setup before comparing tire choices.
A 265/70R16 tire is a metric radial size with a 265-millimeter section width, a 70-series aspect ratio, and fitment for a 16-inch rim. On the 2018 Chevrolet Trucks Colorado, this size is used on certain configurations that run a 16-inch wheel, so wheel diameter matters before anything else. Available options in this size include BFGoodrich's All-Terrain T/A KO2 with raised white letter sidewalls, giving it a more aggressive truck-oriented presentation. This size makes the most sense when the truck already carries the proper 16-inch wheels and the goal is to stay with the original wheel diameter.
A 255/65R17 tire uses a 255-millimeter section width, a 65-series profile, and mounts on a 17-inch rim. For the 2018 Chevrolet Trucks Colorado, this size appears across several sub-models, making it one of the more common fitments in the lineup, but it is still tied to a specific wheel diameter. BFGoodrich offers this size in the All-Terrain T/A KO2 series with raised white letter sidewalls, which gives buyers a recognizable all-terrain look along with a radial construction. It is the right size to evaluate only after confirming that the truck is equipped with the correct 17-inch wheels.
A 265/60R18 tire is a metric radial size that combines a 265-millimeter section width with a 60-series profile on an 18-inch rim. On the 2018 Chevrolet Trucks Colorado, this size belongs to trim levels that were equipped with 18-inch wheels, so it should be matched to the truck's actual wheel package rather than assumed from the model name alone. Its lower profile compared with the 16-inch and some 17-inch fitments changes the visual balance of the tire and wheel package. This is the size to consider when maintaining the truck's existing 18-inch setup rather than converting to another rim diameter.
A 265/65R17 tire pairs a 265-millimeter section width with a 65-series aspect ratio and a 17-inch rim diameter. On the 2018 Chevrolet Trucks Colorado, this size is associated with the ZR2, which means it should not be confused with the other 17-inch Colorado fitment simply because the rim diameter matches. The difference in section width and profile means the tire selection question is about the exact sub-model, not just the wheel size stamped on the rim. This size is the one to verify when replacing tires on a ZR2 or any truck that has been kept on that specific factory-style setup.
Tire fitment on the 2018 Chevrolet Trucks Colorado varies by sub-model, and some trims also have more than one valid size. Checking the exact trim matters here because Colorado fitment spans three rim diameters and multiple metric radial sizes.
1
2018 Chevrolet Trucks Colorado Base
The 2018 Chevrolet Trucks Colorado Base uses the 265/70R16 radial size. That keeps tire selection fairly straightforward, with the main checks being the existing 16-inch wheels, rim-width compatibility, and whether the truck has been modified from its original wheel and suspension setup.
The 2018 Chevrolet Trucks Colorado LT can use either 255/65R17 or 265/60R18, depending on the wheel package on the truck. Tire selection starts with confirming whether it has 17-inch or 18-inch rims, then matching the replacement tire to that exact setup.
The 2018 Chevrolet Trucks Colorado WT has the widest fitment spread, using 265/70R16, 255/65R17, or 265/60R18 depending on configuration. That makes wheel-diameter confirmation especially important before ordering tires or comparing tread and sidewall options.
The 2018 Chevrolet Trucks Colorado Z71 uses the 255/65R17 radial size. The key choice is not between multiple primary sizes, but between available tires within that size and whether the truck still retains its original 17-inch wheel setup.
The 2018 Chevrolet Trucks Colorado ZR2 uses the 265/65R17 radial size. Since that differs from the other 17-inch Colorado fitment, replacement selection should start by confirming the exact ZR2 wheel and tire combination already on the truck.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 2018 Chevrolet Trucks Colorado Tires for Sale
Available product choices for the 2018 Chevrolet Trucks Colorado currently center on BFGoodrich All-Terrain T/A KO2 tires in 265/70R16 and 255/65R17. These radial options use raised white letter sidewalls and differ in rim-width range, load capacity, and overall tire weight.
Colorado tire questions usually come down to trim-specific sizing, wheel diameter, and choosing the right radial tire for how the truck is actually used. The FAQs below focus on fitment, sidewall and brand choices, and the checks worth making before road use.
Tire Size & Fitment
What tire size fits a 2018 Chevrolet Trucks Colorado?
The 2018 Chevrolet Trucks Colorado does not use one universal size across the full model line. Depending on sub-model and wheel package, the primary tire sizes are 265/70R16, 255/65R17, 265/60R18, and 265/65R17, and all are radial constructions.
The right starting point is the exact trim and the wheel diameter currently on the truck. A Base model uses 265/70R16, a Z71 uses 255/65R17, and a ZR2 uses 265/65R17, while LT and WT trucks can vary by wheel package, so checking the tire sidewall and wheel size before replacement helps avoid ordering the wrong fitment.
What size rim does a 2018 Chevrolet Trucks Colorado use?
A 2018 Chevrolet Trucks Colorado can use 16-inch, 17-inch, or 18-inch rims, depending on the sub-model and tire size. The 265/70R16 tire uses a 16-inch rim, both 255/65R17 and 265/65R17 use a 17-inch rim, and 265/60R18 uses an 18-inch rim.
That makes wheel diameter the first fitment check before choosing tires. Two Colorado tire sizes share a 17-inch rim diameter but are not the same size, so the rim alone is not enough; the complete tire size and trim should both be confirmed, especially on trucks that may have had wheel swaps or appearance-package changes.
Why does the 2018 Chevrolet Trucks Colorado have more than one tire size?
The 2018 Chevrolet Trucks Colorado uses more than one tire size because the model range includes different trims and wheel packages. Base, LT, WT, Z71, and ZR2 configurations do not all share the same wheel-and-tire setup, so the Colorado lineup spans 16-inch, 17-inch, and 18-inch fitments.
That variation means replacement tires should be chosen by the exact truck rather than by model name alone. LT and WT trims especially deserve a closer look because they can appear with different wheel diameters, and the ZR2's 265/65R17 should not be confused with the 255/65R17 used on other 17-inch Colorado applications.
Choosing the Right Tire
What should I consider when choosing a tire for a 2018 Chevrolet Trucks Colorado?
Start with the correct size for the exact 2018 Chevrolet Trucks Colorado sub-model and wheel diameter, then compare the tire's construction, load capacity, rim-width range, and intended use. Since Colorado fitment spans four sizes, getting the basic fitment right matters more than comparing tread style first.
After the size is confirmed, think about how the truck is actually driven. A Colorado used for mixed pavement and light off-road duty may call for a different replacement approach than a truck used mainly on-road, and details such as sidewall styling, tire weight, and wheel compatibility can help narrow the final choice within the correct size.
What sidewall styles are available for 2018 Chevrolet Trucks Colorado tires?
Among the available Colorado products here, the visible sidewall treatment is RWL, or raised white letter. That sidewall style appears on BFGoodrich All-Terrain T/A KO2 options offered for 265/70R16 and 255/65R17, giving those tires a more traditional all-terrain truck appearance than a plain black sidewall.
Sidewall appearance does not change the need to match the correct size and rim diameter, but it can influence the truck's finished look. On a Colorado that still carries its stock-style wheels, raised white letters can create a more assertive visual presentation, while owners focused on a subtler look may want to compare how the mounted sidewall will complement the wheel design.
What brands offer tires for the 2018 Chevrolet Trucks Colorado?
The available products for the 2018 Chevrolet Trucks Colorado here are from BFGoodrich. The offerings shown are in the All-Terrain T/A KO2 series for 265/70R16 and 255/65R17, both in radial construction and with raised white letter sidewalls.
Brand choice is only part of the decision, because the more important question is whether the tire matches the truck's exact size and wheel setup. Once that is settled, comparing the KO2 options by load capacity, rim-width range, and the truck's intended use will be more useful than focusing on the brand name by itself.
Restoration & Appearance
Does correct tire fitment matter for the appearance of a 2018 Chevrolet Trucks Colorado?
Yes, correct tire fitment has a noticeable effect on how a 2018 Chevrolet Trucks Colorado sits and looks. Because the Colorado uses four different primary sizes across 16-inch, 17-inch, and 18-inch wheel packages, the wrong combination can change the truck's visual balance even before clearance or drivability issues are considered.
Owners trying to keep a stock-style presentation should start by matching the existing trim-specific wheel diameter and tire size. After that, details like sidewall style become part of the appearance decision, and a raised white letter all-terrain tire can give a different character than a more understated sidewall on the same basic truck.
Which sidewall style suits a stock-style 2018 Chevrolet Trucks Colorado?
A stock-style 2018 Chevrolet Trucks Colorado can still take on a different visual character depending on sidewall treatment. The available sidewall style shown here is raised white letter, which gives the truck a more assertive all-terrain look than a plain black sidewall would.
The best appearance choice depends on the look you want from the truck rather than a universal rule across the full Colorado lineup. A WT, Base, or Z71 with original-style wheels may wear that sidewall very differently, so it helps to consider wheel design, ride height, and whether the goal is a cleaner factory-inspired presentation or a more rugged period-style truck stance.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Chevrolet Trucks Colorado?
Yes, modifications can affect tire fitment on a 2018 Chevrolet Trucks Colorado even when the replacement tire matches one of the original size codes. Wheel swaps, changes in wheel width, suspension lifts or lowering, and body or fender alterations can all change clearance around the tire.
A Colorado with aftermarket wheels may also have a different effective fitment situation than a stock truck of the same trim. Checking wheel diameter, actual tire size, steering clearance, and space at the fenders before replacement is especially important on LT and WT trucks, since those trims already span more than one original wheel-and-tire package.
What should I inspect before driving a 2018 Chevrolet Trucks Colorado on new tires?
Before driving a 2018 Chevrolet Trucks Colorado on new tires, inspect the wheel diameter and condition, confirm the installed size matches the truck's trim and wheel package, and make sure the tires are inflated properly for the application. It also helps to look at valve stems, lug hardware, and tread and sidewall condition after installation.
A short clearance check is worthwhile before regular road use. Turn the steering from lock to lock, watch for rubbing, and pay attention to any vibration or pull during the first miles, since those signs can point to balance, alignment, or fitment issues that should be corrected before the truck returns to normal service.
How often should tires on a 2018 Chevrolet Trucks Colorado be inspected?
Tires on a 2018 Chevrolet Trucks Colorado should be inspected regularly, not just when replacement time arrives. Pressure, tread wear, cuts, punctures, bulges, and sidewall damage are worth checking routinely, especially on a truck that sees mixed highway, jobsite, or light off-road use.
An inspection is also smart before a longer trip or after any impact with curbs, potholes, or trail debris. Uneven wear can reveal alignment or suspension issues, and a Colorado running the wrong size for its wheel package may show drivability or clearance problems that are easier to catch early than after the tires have accumulated significant mileage.
