2018 Lincoln Tire Fitment Guide

2018 Lincoln vehicles use five sizes split between two models. The Continental uses 235/50R18, 255/45R19, and 245/40R20, while the MKZ uses 245/45R18 and 245/40R19. Rim diameters across the range are 18, 19, and 20 inches. Where rim-width guidance is available, 235/50R18 fits 6.5 to 8.5-inch rims, 245/45R18 fits 7.5 to 9.0-inch rims, 245/40R19 fits 8.0 to 9.5-inch rims, and 245/40R20 fits 8.0 to 9.5-inch rims.

The practical takeaway is that year and make alone are not enough for a 2018 Lincoln tire purchase. Start by confirming whether the car is a Continental or an MKZ, then verify the wheel diameter already on the car. That narrows the fitment quickly and helps avoid confusion between sizes that look similar on paper but mount on different wheels.

On a 2018 Lincoln tire, 245/40R20 means the tire is 245 millimeters wide, has a 40-series aspect ratio, uses radial construction, and fits a 20-inch wheel. The same decoding logic applies to the other modern Lincoln sizes as well: the first number is width, the second is sidewall profile, the R indicates radial construction, and the last number is wheel diameter in inches.

That code matters because a 245/40R20 cannot be substituted casually for an 18- or 19-inch Lincoln fitment. Even when section widths are close, the wheel diameter and sidewall height are different, which changes what wheel the tire fits and how it fills the wheel opening. For a 2018 Lincoln, reading the full size code is more important than focusing on width alone.

No, 2018 Lincoln models do not use the same tire size. The Continental has three distinct sizes across 18-, 19-, and 20-inch wheel packages, while the MKZ uses two different sizes on 18- and 19-inch wheels. None of the five sizes are shared between both models at the year-make level.

That means model identification is the first step, not a minor detail. A Continental owner choosing between 18-, 19-, and 20-inch fitments faces a different set of tire options than an MKZ owner. If the car has had wheels changed at some point, confirm the actual sidewall marking and wheel diameter before settling on a replacement size.

Sidewall style choices for 2018 Lincoln tires are mostly Blackwall, with one exception. The 245/40R20 size used on the Continental is available in both Blackwall and RWL form, while 235/50R18, 245/40R19, and 245/45R18 are Blackwall only among the available products. That keeps most 2018 Lincoln fitments aligned with the understated sidewall appearance expected on modern luxury sedans.

For most owners, Blackwall will look the most natural on a 2018 Lincoln, especially on a Continental or MKZ with original-style luxury presentation. The raised-white-letter option on 245/40R20 introduces a more overt performance look, so the decision is largely visual rather than a question of basic compatibility. Check the exact product description if sidewall appearance matters as much as the size itself.

BFGoodrich, Nitto, and Pro-Trac all have applications within the 2018 Lincoln range. BFGoodrich appears across 245/40R20, 235/50R18, 245/40R19, and 245/45R18, Nitto covers 245/40R20, 235/50R18, and 245/45R18, and Pro-Trac appears in 245/40R20. Brand choice changes by size, so the exact fitment on the car determines which names are available.

That matters most when a buyer already prefers a certain brand family or tread character. A Continental on 20-inch wheels has the widest brand spread in this group, while some other sizes are more concentrated around BFGoodrich and Nitto offerings. Once the correct size is confirmed, comparing series, sidewall style, and speed rating is usually more useful than comparing brand names in isolation.

For a 2018 Lincoln, both the BFGoodrich g-Force COMP-2 A/S and g-Force Phenom T/A appear in several matching fitments, but their published details are not identical. In 245/40R20, the COMP-2 A/S weighs 29 pounds while the Phenom T/A weighs 28.06 pounds, and the Phenom T/A carries a 99Y marking with a 1709-pound load figure at 50 psi. In 245/45R18, the COMP-2 A/S weighs 28 pounds while the Phenom T/A weighs 25.95 pounds and carries a 100Y marking with a 1764-pound load figure at 50 psi.

Those differences make it worthwhile to compare the exact series, not just the size. A buyer deciding between two BFGoodrich choices for the same 2018 Lincoln fitment may care about weight, speed rating, or the specific load figure attached to that product. Reading the complete sidewall code and product specs is the best way to separate two tires that otherwise appear very close.

Several 2018 Lincoln sizes have clear rim-width guidance. The 235/50R18 size fits 6.5 to 8.5-inch rims, the 245/45R18 fits 7.5 to 9.0-inch rims, the 245/40R19 fits 8.0 to 9.5-inch rims, and the 245/40R20 fits 8.0 to 9.5-inch rims. Each of those ranges stays tied to that exact size and should not be transferred automatically to another 2018 Lincoln fitment.

That means wheel width should be checked alongside tire size, especially if the car has aftermarket wheels or if the original wheel package is uncertain. A tire may match the correct diameter yet still be outside its preferred rim-width window. Confirming both measurements before mounting helps avoid fitment issues and preserves the tire’s intended profile on the wheel.

2018 Lincoln tires in these fitments are modern radial passenger-car sizes, and none of the available products are marked as tube-type. The sidewall markings shown for these applications are standard radial designations such as 245/40ZR20, 235/50ZR18, 245/40ZR19, and 245/45ZR18 rather than tube-type markings used on older specialty tires.

For most 2018 Lincoln owners, the more important setup check is wheel condition rather than tube selection. Make sure the wheel is appropriate for a modern tubeless radial, the bead seat is clean, and the valve stem is in good condition. If the car is running replacement or custom wheels, verify the wheel manufacturer’s requirements before mounting new tires.

A 2018 Lincoln stored on its tires should be kept in a cool, dry space away from direct sunlight, electric motors, welders, furnaces, and other ozone-producing equipment. Maintain proper inflation during storage and move the car occasionally so one section of the tread is not supporting the same load for months at a time. Even modern radials benefit from avoiding long stationary periods on underinflated tires.

For seasonal or collector use, clean storage habits do as much for tire condition as low mileage does. If the car will sit for an extended period, some owners use tire cradles or stands to reduce stress on the carcass, but regular pressure checks and a stable environment remain the first priorities. Good storage helps protect both the tire structure and the cosmetic finish of the sidewalls.

Tires on a 2018 Lincoln should be judged by age as much as by tread depth. A sensible collector-car rule is to evaluate tires closely once they reach about five to seven years of age and to treat roughly ten years as a serious replacement threshold even if the tread still looks usable. The DOT date code on the sidewall is the best starting point for determining age.

That approach matters because many luxury cars accumulate low mileage and can appear to have plenty of tread long after the rubber has begun to age out. A 2018 Lincoln that is driven occasionally may still need tires sooner than mileage alone suggests. Cracking, hardening, irregular wear, or repeated air loss are all signs that calendar age is becoming the more important factor.

Tires on a 2018 Lincoln should be inspected before every drive and given a more deliberate check before highway trips or longer outings. Look for cuts, bulges, sidewall cracking, punctures, uneven wear, and any sign that a tire has been run low on pressure. Pressure itself should be checked regularly rather than assumed from appearance alone, especially on lower-profile sizes.

Frequent inspection is especially important on a luxury sedan that may alternate between daily use and long periods parked. Catching a slow leak or inner-edge wear early can prevent damage that is harder to see once the car is moving. If the car has recently had suspension work, alignment changes, or wheel replacement, inspect the tires more closely during the first several hundred miles.

The 2018 Lincoln Continental belongs to a modern era in which radial tires were standard equipment, and its fitments here are all modern metric radial sizes on 18-, 19-, or 20-inch wheels. That means an owner seeking an original-type replacement should stay with the exact size and wheel diameter used on the car rather than looking to older bias-ply or numeric sizing conventions associated with earlier collector vehicles.

Authenticity on a late-model luxury car is usually less about vintage construction and more about preserving the correct overall fitment, sidewall look, and wheel-package appearance. If the car is being returned to factory presentation, confirm the original wheel diameter from the vehicle itself and compare the sidewall code currently on the car. For trim-specific confirmation, a Lincoln specialist or marque-focused source can help verify the original package.

Yes, correct tire fitment still matters when showing a 2018 Lincoln, even though the standards are different from those applied to mid-century collector cars. Judges and knowledgeable observers will notice if the car is on the wrong overall size, an obviously different sidewall style, or a wheel diameter that does not match the presentation the car would have carried in factory form.

For a modern Lincoln, the biggest authenticity errors are usually visual rather than structural. A 20-inch Continental with an aggressive raised-white-letter appearance will read differently than one wearing a more subdued black sidewall, and an 18-inch MKZ should not be mistaken for a 19-inch fitment. Matching the exact size on the car and choosing a sidewall style that suits its original character are the smartest starting points.

For a 2018 Lincoln, BFGoodrich g-Force Sport COMP-2 and Nitto NT555 G2 overlap in some sizes but show different published details. In 235/50R18, the BFGoodrich weighs 26 pounds with a 1609-pound load figure at 51 psi, while the Nitto weighs 27.86 pounds with a 1819-pound load figure at 50 psi. In 245/45R18, the BFGoodrich weighs 28 pounds with a 1565-pound load figure at 51 psi, while the Nitto weighs 27.37 pounds with a 1764-pound load figure at 50 psi.

That makes this a specification comparison as much as a brand comparison. Two tires can share the same 2018 Lincoln fitment and still differ in weight, load figure, and exact sidewall marking such as XL status. If originality is less important than matching your preferred spec profile, compare the full sidewall code and the product’s published load and pressure information before making the final choice.

Yes, the available 2018 Lincoln tires are modern radial designs with speed ratings that are well above normal U.S. highway speeds. W-rated products are approved to 168 mph, and Y-rated products are approved to 186+ mph. Those ratings appear in several 2018 Lincoln fitments, including 245/40R20, 245/40R19, and 245/45R18, while 235/50R18 is offered with W ratings.

In real use, overall vehicle condition matters as much as the tire rating. A tire with an appropriate speed symbol still depends on correct inflation, sound alignment, healthy suspension components, and proper braking condition. For a 2018 Lincoln used on longer highway trips, the safest approach is to treat the tire as one part of the car’s full roadworthiness rather than the only factor.

Inflation pressure on a 2018 Lincoln should follow the vehicle’s factory placard or owner’s manual for normal service, while the tire’s own published maximum load and pressure figures help define the tire’s upper-rated capacity. Available examples include 245/40R20 at 1709 pounds at 50 psi, 235/50R18 at up to 1819 pounds at 50 psi or 1609 pounds at 51 psi depending on product, 245/40R19 at 1653 pounds at 50 psi, and 245/45R18 at up to 1764 pounds at 50 psi or 1565 pounds at 51 psi.

Those numbers should not be treated as a blanket running-pressure recommendation. Maximum-rated pressure is tied to the tire’s load capability, not necessarily the correct cold inflation target for the car in everyday driving. Use the Lincoln placard first, then confirm that the chosen tire is being used within its own load and pressure limits for that exact size.

Before a longer drive in a 2018 Lincoln, inspect all four tires and the spare for cracking, punctures, uneven wear, bulges, and any signs of impact damage. Check cold inflation pressure, make sure the valve stems are sound, and verify that tread depth is even across the axle. A quick look at the sidewall also confirms that all four tires match the intended size and are appropriate for the wheels on the car.

Tires are only part of the preparation, but they are one of the easiest items to verify before setting out. On a modern luxury sedan, a longer trip should also prompt a basic check of alignment feel, brake response, and suspension behavior during the first few miles. Catching a vibration or pull early is far better than discovering it after hours on the road.