800/850-14 Tire Size Guide

The 800/850-14 is an older numeric tire size. In this code, 800 and 850 identify two nominal width designations used within the same vintage size family, and 14 identifies the wheel diameter in inches. It is a classic bias-ply format associated with passenger-car use from the 1940s into the early 1960s.

Modern P-metric sizes usually give width in millimeters, an aspect ratio, construction type, and rim diameter all in one code. The 800/850-14 format does not do that. It does not directly state a sidewall ratio, load index, or speed rating, so buyers need to look at the actual tire specification and wheel setup rather than relying on the size code alone.

The 800/850-14 tire fits a 14.0-inch wheel, which is 355.6 millimeters in diameter. The rim diameter has to match exactly because tire beads are engineered for one specific wheel diameter and will not seat correctly on a different size.

Wheel width matters too. In this size, the available product uses a 6.50-inch rim width. Buyers should treat that as part of the fitment picture along with wheel design, tire construction, and intended use. If the car has aftermarket wheels or a changed suspension setup, confirm bead-seat diameter and actual wheel width before mounting anything.

The 800/850-14 tire has an 8.0-inch section width, which is about 203.2 millimeters. Section width is measured at the widest point of the inflated tire, from sidewall to sidewall, rather than across the tread face.

That distinction matters during fitment checks. Tread width is often narrower than section width, but the sidewall bulge is what usually gets close to fenders, steering arms, inner wheelhouses, or suspension parts. On a vintage car, even small differences in wheel offset or ride height can change clearance, so section width is one of the first dimensions worth comparing.

Yes, 800/850-14 and 80085014 refer to the same tire size. The difference is only how the code is written. One version uses a slash and dash, while the other compresses the same information into a single string without punctuation.

You may also see spacing variations such as 800 850 14. Those notation changes do not create a different fitment. What matters is matching the actual size family, wheel diameter, construction type, and the specifications of the tire itself. On older sizes especially, punctuation can vary by catalog, but the wheel and vehicle checks still matter more than the way the code is typed.

The 800/850-14 is commonly a tube-type fitment, and older bias-ply sizes like this were often set up with a tube. Tube use is not determined by size alone, though, because the wheel design and the exact tire construction also matter.

Original-style wheels, specialty wheels, and modern replacement wheels can have different bead and sealing characteristics. For that reason, tube use should be confirmed against the actual wheel and the specific tire being installed. If there is any doubt, have the wheel inspected for condition, rust, pitting, and proper compatibility before deciding whether a tube is appropriate.

The available 800/850-14 tire weighs 17.5 pounds. That figure refers to the tire by itself, without the wheel, and gives you a practical idea of the mass being added at each corner or driven axle location.

Tire weight affects more than shipping or handling. It contributes to unsprung weight, which influences how the suspension reacts over bumps and how quickly the assembly changes direction. On a lightweight vintage build or a drag-oriented application, even a modest weight difference can matter, so it is worth considering alongside wheel weight and overall tire dimensions.

The 800/850-14 is associated with classic passenger cars from the 1940s into the early 1960s, so it falls squarely into an original-equipment era for many older builds. Even so, original use of the size does not automatically mean every tire built in that size will suit every car or every wheel.

Vehicle fitment depends on wheel width, wheel offset, brake and suspension clearance, and the way the car currently sits. Many collector cars have had wheels changed over the years, and that can alter how a vintage-size tire fits. Treat the size as a starting point, then compare the actual wheel, axle clearance, and vehicle documentation before making a final decision.

Start with the basics: the 800/850-14 requires a 14-inch wheel and, in the available product, a 6.50-inch rim width. Those are the first hard measurements to confirm because a mismatch in bead-seat diameter or wheel width can change how the tire mounts and how the sidewall sits.

Beyond wheel size, inspect the wheel itself for straightness, corrosion, and bead-seat condition. Vintage wheels may have age-related issues that do not show up until mounting time. If the car uses older original rims, also confirm whether the wheel-and-tire combination should be run with a tube, since that is a wheel-system question rather than something the size code settles by itself.

The 800/850-14 is often a strong match for a period-style restoration because it is a bias-ply numeric size tied to the 1940s through early 1960s passenger-car era. Buyers pursuing an original look usually value that older construction style and the visual proportions that come with it.

Authenticity, however, is not just a matter of matching the sidewall code. Judged or detail-focused restorations should also consider the car’s original wheel dimensions, stance, and the type of driving it will actually see. A tire can look right in size but still be the wrong choice if the wheel setup, intended use, or overall appearance differs from the vehicle’s original configuration.

The 800/850-14 uses bias-ply construction, and that usually gives a different driving feel than a modern radial. Expect more sidewall influence in the way the car tracks and steers, along with a traditional ride character that suits older suspension designs and period-correct builds.

Actual road behavior depends on more than construction alone. Steering response, straight-line stability, and ride comfort are also shaped by alignment, suspension wear, wheel condition, inflation, and how long the tire has been in service. On a vintage car, a properly sorted front end makes as much difference as the tire itself when it comes to predictable handling.

The 800/850-14 is a specialty vintage-size bias-ply tire, so the driving experience is usually more about period character than modern-car sharpness. Buyers are typically choosing this size for its classic proportions and traditional feel rather than expecting the response of a later radial passenger tire.

Use pattern matters a great deal here. A car driven occasionally to shows or local cruises may place very different demands on the tire than one that sees frequent highway miles. Match the tire not only to the wheel and the body clearance, but also to the way the vehicle will really be used once it is back on the road.

Any tire in the 800/850-14 family can influence stance and clearance because vintage numeric sizes carry a distinct sidewall profile and overall visual bulk. The 8.0-inch section width is one of the main dimensions to compare if you are concerned about outer fender space, inner wheelhouse room, or steering clearance.

Wheel width and wheel placement can magnify those effects. A tire mounted on the correct 6.50-inch wheel can present differently than one forced onto a wheel outside its intended profile. Before mounting a full set, compare the existing tire’s section width, wheel position, and the car’s ride height so you do not unintentionally change the look or create rubbing issues.

The 800/850-14 is available from M&H Racemaster. In a specialty vintage size like this, the brand name matters less than confirming that the tire’s construction, intended use, and wheel requirements line up with the vehicle you are fitting.

Buyers should look past the size stamp alone and compare the whole tire package. Construction type, weight, sidewall styling, and how the tire is meant to be used all affect whether it is appropriate for a restoration, a traditional street build, or a specialized application. Consistency across the full set is also important if appearance and handling balance matter to the project.

A quality 800/850-14 tire starts with correct basic dimensions, sound bias-ply construction, and a wheel match that preserves the intended profile. In a vintage numeric size, sizing accuracy and predictable mounting matter because older vehicles often have tighter visual and mechanical tolerances than later cars.

Construction quality should be judged in context. Some buyers care most about period appearance, while others are trying to match a very specific specialty use. In either case, inspect the tire’s marked dimensions, confirm its intended service, and make sure all tires on the vehicle share the same size family and general design so the car behaves and looks consistent.

Yes, sidewall style can matter quite a bit because it affects both appearance and application. The available 800/850-14 tire uses a blackwall sidewall, which suits many traditional builds and specialty uses where a simple, utilitarian vintage look is preferred.

Appearance should still be weighed against the rest of the wheel-and-tire package. A blackwall may look completely at home on one car and visually out of place on another depending on trim level, wheel design, and restoration goals. Sidewall style does not change the size itself, but it absolutely changes how the finished vehicle presents.

The 800/850-14 should be inspected regularly for cracking, cuts, bulges, uneven wear, and air loss, just as any vintage-size tire should. Bias-ply construction and collector-vehicle use patterns make visual inspection especially important because low miles do not automatically mean low risk.

Check the sidewalls, tread area, and bead area carefully, especially if the car sits for extended periods between drives. A tire can age from time, sunlight, heat, moisture, and ozone exposure even when tread depth still looks acceptable. Before any longer trip, inspect each tire and the spare rather than assuming a lightly used set is still ready for service.

The 800/850-14 should be stored away from direct sunlight, heat sources, electric motors, and damp conditions when the vehicle is parked for long periods. Vintage bias-ply tires benefit from a stable environment because age and storage conditions can harden rubber and encourage cracking long before the tread is worn out.

If the car is seasonal, keep it on a clean surface, maintain proper inflation, and move it occasionally to reduce long-term flat spotting. Storage care is especially important on collector vehicles that spend more time parked than driven. Good storage habits do not stop aging, but they can slow avoidable deterioration and help preserve ride quality.

The 800/850-14 is commonly a tube-type fitment, but the final decision still depends on the actual wheel and the exact tire being installed. Older wheels may require a tube because of their design or condition even when a buyer assumes the size code should settle the question.

Confirm tube use by looking at the specific tire markings, the wheel construction, and the intended operating conditions. Rust, pitting, or damage inside a vintage rim can affect whether the assembly seals properly. If there is any uncertainty, have a qualified tire professional inspect the wheel and advise on the correct tube-and-flap arrangement, if one is needed.

The 800/850-14 should be replaced when it shows cracking, bulges, repeated air loss, impact damage, or other visible signs of age, even if the tread still appears usable. Vintage-size tires often spend time on collector cars, and age-related deterioration can matter as much as wear.

Time, heat, sunlight, storage conditions, and long periods of inactivity all affect rubber condition. Before using an older set on current roads, inspect every tire closely and consider how long it has been in service. A tire that looks acceptable at a glance may still be a poor candidate for regular driving if the casing or sidewalls have aged out.

Before driving on the 800/850-14, confirm the 14-inch wheel diameter, the 6.50-inch rim width used by the available tire, and the general condition of the wheel itself. Then inspect the tire for visible aging, damage, and proper inflation before assuming the assembly is ready for road use.

Vintage wheel-and-tire systems deserve extra attention because the tire, wheel, and tube decision all work together. Clearance at the fender, steering components, and suspension should also be checked with the vehicle at normal ride height. For any longer drive, review current sidewall markings and have questionable assemblies examined before they are put under load.

Yes, buyers should treat the 800/850-14 as a specialty vintage size and confirm that the actual tire chosen matches the vehicle’s intended use. The available example in this size is a bias-ply drag-race design, so buyers should not assume that every tire carrying this size code is meant for the same kind of driving.

Road-use expectations, local requirements, and inspection standards can vary, and size alone does not answer those questions. Review the markings on the specific tire, verify wheel compatibility, and make sure the tire’s purpose aligns with how the vehicle will be driven. When use, condition, or setup is uncertain, a qualified tire professional should be part of the decision.