The 2018 BMW 740i sits in the modern luxury-sedan class where ride quality, high-speed composure, and precise chassis tuning all matter as much as appearance. As part of the 7 Series lineup, it blends executive comfort with the sharper wheel-and-tire fitments expected of a contemporary BMW. Tire selection for the 2018 BMW 740i centers on radial construction, but the exact size depends on whether the car is using 18-inch, 19-inch, or staggered 20-inch wheel fitment. Available choices include blackwall, redline, and raised white letter styles across several performance-oriented series. The key is matching the exact wheel setup first, then choosing the tire style and specification that suit the car's intended use.
Which Tire Size Is Right for The 2018 BMW 740i
The 2018 BMW 740i uses five primary tire sizes, and the right one depends on the car's exact wheel setup and position on the vehicle. Fitment varies by sub-model and rim diameter, with 18-inch, 19-inch, and staggered 20-inch combinations all appearing here. Before choosing a tire, confirm whether the car has a square setup or separate front and rear sizes.
A 245/45R19 tire uses a 245-millimeter section width, a 45-series profile, radial construction, and a 19-inch rim. On the 2018 BMW 740i, this size serves as a front or square-fitment radial depending on the wheel setup, making it important to confirm how the car is equipped before ordering. Available choices include BFGoodrich and Nitto options in blackwall form, with several g-Force and NT555 G2 series selections. This size makes sense when the car is running 19-inch wheels and the buyer wants to compare tread style, brand, and rim-width compatibility within that fitment.
A 245/50R18 tire combines a 245-millimeter section width with a taller 50-series sidewall and mounts on an 18-inch rim. For the 2018 BMW 740i, this size is part of the base fitment and keeps the decision focused on sidewall presentation and product style rather than construction, since the available options are radial. In this size, Pro-Trac Street Pro III tires are offered with raised white letter or redline sidewalls. This is the size to evaluate when the car retains its 18-inch wheel setup and the goal is balancing proper fitment with a more distinctive visual treatment.
A 245/40R20 tire keeps the same 245-millimeter width but uses a shorter 40-series sidewall on a 20-inch rim. On the 2018 BMW 740i, this size is used on the front in a staggered setup, so it should be matched carefully to the corresponding rear tire size rather than treated as a universal fitment. Product choices include BFGoodrich, Nitto, and Pro-Trac offerings, with blackwall, raised white letter, and redline styles available. This size is the right place to compare options when the car has 20-inch front wheels and the owner wants both correct positioning and a specific appearance.
A 275/35R20 tire is wider than the 245-section front fitment, using a 275-millimeter section width, a 35-series profile, and a 20-inch rim. On the 2018 BMW 740i, it serves as the rear tire in the staggered 20-inch arrangement, so its role is tied to rear-axle fitment rather than all-around use. Available options come from BFGoodrich, Nitto, and Pro-Trac, with blackwall, raised white letter, and redline sidewall treatments. This size should be chosen only after confirming the car uses the 20-inch staggered setup and that rear wheel width matches the tire's intended application.
A 275/40R19 tire pairs a 275-millimeter section width with a 40-series profile and fits a 19-inch rim. For the 2018 BMW 740i, this is the rear size for the staggered 19-inch arrangement, making it a position-specific fitment rather than a general replacement size for every car. BFGoodrich and Nitto offer blackwall choices here, including g-Force Sport Comp 2, g-Force Comp 2 AS, NT555 G2, and g-Force Phenom T/A series. This size becomes the focus when the car uses wider 19-inch rear wheels and the buyer needs to preserve the intended front-to-rear tire relationship.
Sub-model fitment on the 2018 BMW 740i depends on whether the car is identified as a base square setup or as separate front and rear positions in a staggered arrangement. Checking the exact sub-model matters here because tire size changes with wheel diameter and with front-versus-rear placement.
1
2018 BMW 740i Base
The 2018 BMW 740i Base uses either an 18-inch or 19-inch square fitment, both in radial construction. Tire selection starts with confirming which wheel diameter is on the car, then narrowing the choice by brand, sidewall style, and product series.
The 2018 BMW 740i Base Front uses the narrower front sizes in the staggered setups, with either 19-inch or 20-inch radial fitment. That makes front-wheel diameter the first checkpoint, followed by matching the tire to the corresponding rear setup already on the car.
The 2018 BMW 740i Base Rear uses the wider rear sizes associated with the staggered 19-inch and 20-inch arrangements. Rear tire choice should stay tied to the existing front size and wheel package so the car keeps the intended staggered fitment relationship.
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 BMW 740i Tires for Sale
Available 2018 BMW 740i tire choices span BFGoodrich, Nitto, and Pro-Trac across several radial performance series. Depending on size, buyers can compare blackwall, redline, and raised white letter sidewalls along with different rim-width specifications and load-capacity details.
These FAQs focus on the 2018 BMW 740i's multiple tire sizes, wheel-diameter differences, staggered front and rear fitments, and the practical details that matter when choosing, inspecting, and maintaining modern radial tires.
Tire Size & Fitment
What tire size fits a 2018 BMW 740i?
The 2018 BMW 740i uses several tire sizes: 245/50R18, 245/45R19, 245/40R20, 275/40R19, and 275/35R20. All of them are radial sizes, but they do not all serve the same role. Some apply to a square base setup, while others are used as front or rear sizes in staggered wheel packages.
The first step is confirming the actual wheel setup on the car. An 18-inch base fitment uses a different size than a 19-inch arrangement, and the staggered setups split front and rear sizes. Checking the tire placard, wheel diameter, and whether the car has matching or staggered tires will prevent ordering the right size for the wrong axle or wheel package.
What size rim does a 2018 BMW 740i use?
A 2018 BMW 740i can use 18-inch, 19-inch, or 20-inch rims depending on the specific fitment. The tire sizes here are built around those diameters, with 245/50R18 on 18-inch rims, 245/45R19 and 275/40R19 on 19-inch rims, and 245/40R20 plus 275/35R20 on 20-inch rims.
Wheel diameter needs to be confirmed before anything else because a tire for one rim diameter cannot be mounted on another. It also helps to verify whether the car has the same wheel size at all four corners or a staggered arrangement with different front and rear widths. Looking at the wheel itself and the current tire sidewall will usually answer that quickly.
Why does the 2018 BMW 740i have more than one tire size?
The 2018 BMW 740i has more than one tire size because it appears with different wheel diameters and with both square and staggered fitments. A square setup keeps the same size at all four corners, while the staggered arrangements use narrower front tires and wider rear tires to match the car's wheel package.
That means tire selection is not just about the model name. The actual setup on the car determines whether you need one size or a front-and-rear pair. Any time a previous owner has changed wheels, the safest approach is to confirm the current rim diameter and compare the front and rear sidewall markings before replacing anything.
Choosing the Right Tire
What should I consider when choosing a 2018 BMW 740i tire?
Start with the exact size and wheel position, because the 2018 BMW 740i can use square or staggered radial fitments. Once the size is confirmed, compare construction details that matter within that size, such as brand, tire series, sidewall style, rim-width compatibility, and any stated load-capacity information.
The right choice depends on how the car is used and how the owner wants it to look. A blackwall performance tire gives a different presentation than a redline or raised white letter option, even when the size is correct. Keeping the tire matched to the wheel diameter and intended front or rear position is just as important as choosing the tread style.
What sidewall styles are available for 2018 BMW 740i tires?
Sidewall choices for the 2018 BMW 740i include blackwall, redline, and raised white letter styles, depending on tire size. Blackwall options appear across BFGoodrich and Nitto performance-oriented sizes, while Pro-Trac Street Pro III options bring redline and raised white letter treatments in several of the 18-inch and 20-inch sizes.
The practical difference is mostly visual, so the best sidewall choice depends on the look you want alongside the correct fitment. A blackwall usually keeps a more understated modern appearance, while redline or raised white letter tires create a more customized presentation. Sidewall style should always be chosen after confirming the exact size and wheel package on the car.
What brands offer tires for the 2018 BMW 740i?
Tires for the 2018 BMW 740i are available from BFGoodrich, Nitto, and Pro-Trac. Depending on size, the available series include BFGoodrich g-Force Comp 2 AS, g-Force Phenom T/A, g-Force Sport Comp 2, Nitto NT555 G2, and Pro-Trac Street Pro III.
Those brand and series differences matter most after the basic fitment question is settled. Some sizes are offered only with blackwall styling, while others also include redline or raised white letter treatments. Comparing the tire by size first, then by series character, sidewall appearance, and wheel-width suitability, will produce a more useful choice than starting with brand alone.
Restoration & Appearance
Which tire should I choose for a period-style 2018 BMW 740i?
A period-style approach on a 2018 BMW 740i starts with keeping the correct wheel diameter and front-to-rear fitment relationship already on the car. Since this is a modern radial application, the most relevant appearance choices come from sidewall treatment and tire series rather than from changing to an older tire construction.
Blackwall tires preserve the more restrained luxury-sedan look many owners expect, while redline or raised white letter options create a more customized presentation. The car's exact wheel package still needs to lead the decision. Choosing a visually appealing tire in the wrong front or rear size can upset the intended staggered setup even if the sidewall style looks right.
How does tire construction affect the appearance of a restored 2018 BMW 740i?
On a 2018 BMW 740i, tire construction is straightforward because the primary fitments are radial across all listed sizes. That means appearance changes come less from construction type and more from profile, wheel diameter, and sidewall styling such as blackwall, redline, or raised white letter.
For a clean restoration-oriented look, keeping the proper size for the car's actual wheel package matters more than searching for a different construction. A 20-inch staggered setup presents differently than an 18-inch square setup even before brand is considered. Owners aiming for a highly exact visual result should also compare against period sales material or marque-specific references.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 BMW 740i?
Yes, modifications can affect tire fitment on a 2018 BMW 740i. Wheel changes, altered offsets, suspension lowering, or aftermarket front and rear widths can all change how a listed size sits in the wheelhouse, even when the tire size itself matches one of the original fitment patterns used on this model.
That matters most on staggered setups, where the front and rear tires already serve different positions. A car with non-original wheels may need extra attention to wheel width and clearance at the strut, fender, and steering range. Verifying the current wheel specifications before replacing tires is the smartest way to avoid choosing a size that matches the model year but not the car's present setup.
What should I inspect before driving a 2018 BMW 740i on new tires?
Before driving a 2018 BMW 740i on new tires, check that each tire matches the correct wheel position, rim diameter, and directional or staggered arrangement if applicable. It also helps to inspect valve stems, wheel condition, and inflation pressure, then look over the suspension and alignment condition so the new tires start service on a sound platform.
A short first drive should be used to confirm there is no rubbing, vibration, or steering interference. Recheck pressure after the tires have settled, and keep an eye on how the front and rear tires are paired if the car uses staggered sizing. Catching a wheel-position mistake early is much easier than correcting uneven wear after several hundred miles.
How often should tires on a 2018 BMW 740i be inspected?
Tires on a 2018 BMW 740i should be inspected regularly, with a quick visual check before longer drives and a closer inspection at routine service intervals. Look for uneven wear, cuts, bulges, punctures, abnormal shoulder wear, and pressure loss. On a car with staggered tires, compare front and rear condition separately rather than assuming all four tires will wear the same way.
Frequent checks are especially useful on low-mileage cars that may sit for long periods, since age and air loss can matter as much as tread depth. A tire can still show plenty of tread while developing cracking or flat-spotting from storage. Paying attention to wear pattern changes can also reveal alignment or suspension issues before they shorten the life of a new set.
