The 1981 Jaguar XJ6 belongs to the later run of Jaguar’s long-lived XJ saloon, a car known for combining traditional British luxury with poised highway manners and unmistakable sedan proportions. For tire selection, that matters because the car sits in a transition era where modern metric radial sizing and vintage alphanumeric radial sizing both come into play. The 1981 Jaguar XJ6 uses 205/70R15 and ER70-15 radial fitments on 15-inch rims, giving owners a choice between more modern metric presentation and period-style alphanumeric radial character. Sidewall appearance, tire series, and restoration goals all shape the final decision as much as size alone.
Which Tire Size Is Right for The 1981 Jaguar XJ6
The 1981 Jaguar XJ6 uses two primary tire sizes, and both are radial fitments built for 15-inch wheels. Because the Base model and the version with alloy wheels share the same sizing, the decision is less about sub-model differences and more about whether you want a modern metric radial presentation or a vintage alphanumeric radial look within the correct wheel diameter.
205/70R15 is a metric radial size in which 205 refers to nominal section width in millimeters, 70 is the aspect ratio, R identifies radial construction, and 15 is the wheel diameter in inches. On the 1981 Jaguar XJ6, this size reflects a familiar modern radial format while staying within the correct 15-inch fitment family. Available choices include blackwall, narrow whitewall, and wide whitewall styles from brands such as Maxxis, Michelin, Avon, American Classic, Coker Classic, Tornel, Travelstar, and Dunlop. It is a useful choice for owners balancing road use, traditional appearance, and broad product variety.
ER70-15 is an alphanumeric radial size in which the letter code identifies the general size class, the 70 references the profile family, and the 15 indicates the rim diameter. For the 1981 Jaguar XJ6, this format carries a more period-oriented presentation than a purely modern metric sidewall marking while retaining radial construction. In this fitment, Dunlop SP Sport Aquajet is a notable option, presented as a blackwall bias-look radial that visually suits a traditional sedan profile. This size is worth evaluating when sidewall character matters as much as basic dimensions.
Tire fitment is straightforward across the covered 1981 Jaguar XJ6 sub-models because both use the same two radial sizes on 15-inch rims. Checking the exact sub-model still helps confirm the wheel setup before choosing between modern metric and period-style alphanumeric tire presentation.
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1981 Jaguar XJ6 Base
The 1981 Jaguar XJ6 Base uses the same 205/70R15 and ER70-15 radial fitments found across this model range. That lets the tire decision focus on sidewall appearance, tire series, and whether a modern metric marking or a more vintage alphanumeric presentation better suits the car.
The 1981 Jaguar XJ6 w/alloy wheels shares the same 205/70R15 and ER70-15 radial sizing as the Base model. Tire selection therefore centers on wheel confirmation, visual style, and choosing the product character that best matches restoration priorities or regular road use.
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 1981 Jaguar XJ6 Tires for Sale
Available 1981 Jaguar XJ6 tires center on 205/70R15 and include choices from Maxxis, Michelin, Avon, American Classic, Coker Classic, Dunlop, Tornel, and Travelstar. Buyers can compare blackwall, narrow whitewall, and wide whitewall styles across several radial tire series, including one bias-look radial presentation.
Owners researching 1981 Jaguar XJ6 tires usually need clarity on the two radial sizes, 15-inch rim fitment, sidewall and brand choices, and what to inspect before putting a collector-era Jaguar back on the road.
Tire Size & Fitment
What tire size fits a 1981 Jaguar XJ6?
The 1981 Jaguar XJ6 uses two primary tire sizes: 205/70R15 and ER70-15. Both are radial fitments for a 15-inch wheel, and both appear across the covered XJ6 configurations, including the Base model and the version with alloy wheels.
That means the main choice is not between different sub-model sizes, but between two sizing formats and the tire options available within them. Start by confirming that the car still has the correct 15-inch wheels, then decide whether you want the familiar metric sidewall format of 205/70R15 or the more period-flavored alphanumeric look of ER70-15.
What size rim does a 1981 Jaguar XJ6 use?
Both primary tire sizes used on the 1981 Jaguar XJ6 are built around a 15-inch rim diameter. The metric 205/70R15 and the alphanumeric ER70-15 each belong to the same 15-inch wheel family, so wheel diameter remains consistent across the fitments covered here.
Rim diameter is only the first step, though. Before choosing a tire, check the actual wheels on the car, especially if it has had replacements over the years. Product options within 205/70R15 also show different rim-width compatibility ranges, so matching the tire to both wheel diameter and wheel width is important before final selection.
Do all 1981 Jaguar XJ6 sub-models use the same tire size?
Yes. The covered 1981 Jaguar XJ6 sub-models share the same two tire sizes: 205/70R15 and ER70-15. That includes the Base model and the XJ6 with alloy wheels, so there is no split here where one trim requires a different diameter or a separate primary fitment.
Because the fitment is shared, owners can focus more on tire character than sub-model differences. The practical decision becomes choosing the size format and appearance that best match the car’s use. It is still wise to verify the wheels actually installed on the car, since older luxury sedans are often fitted with replacement wheels over time.
Choosing the Right Tire
What should I consider when choosing a 205/70R15 tire for a 1981 Jaguar XJ6?
Choosing a 205/70R15 tire for a 1981 Jaguar XJ6 starts with staying within the correct 15-inch fitment and confirming wheel-width compatibility. This size is available in several radial tire series and in blackwall, narrow whitewall, and wide whitewall styles, so the selection can be tailored to both road use and appearance.
Look closely at the kind of presentation you want from the car. A blackwall leans more understated and sporting, while whitewall treatments give the sedan a more traditional luxury look. It also helps to compare details such as rim-width range, load figures where stated, and overall product character rather than choosing only by sidewall style.
What sidewall styles are available for 1981 Jaguar XJ6 tires?
1981 Jaguar XJ6 tires are available in blackwall, narrow whitewall, and wide whitewall styles. Those choices appear within the 205/70R15 fitment, giving owners a meaningful appearance range without leaving the primary size family used on the car.
Sidewall style changes the visual tone of the car even when the size stays the same. A whitewall can emphasize the XJ6’s formal luxury character, while a blackwall tends to look more restrained and performance-oriented. Appearance alone should not drive the decision, so confirm the tire’s construction, wheel compatibility, and intended use alongside the sidewall treatment.
What brands offer tires for the 1981 Jaguar XJ6?
Brands available for the 1981 Jaguar XJ6 include Maxxis, Michelin, Avon, American Classic, Coker Classic, Dunlop, Tornel, and Travelstar. Most of that selection appears in 205/70R15, while ER70-15 representation is present through a Dunlop bias-look radial offering tied to that period-style size format.
That variety gives owners room to compare more than just brand names. Tire series, sidewall style, radial construction details, and rim-width compatibility all influence whether a given option suits the car. The best way to narrow the field is to decide first whether the priority is a traditional luxury appearance, a more sporting presentation, or a period-style sidewall marking.
Restoration & Appearance
Which tire should I choose for a period-style 1981 Jaguar XJ6?
A period-style 1981 Jaguar XJ6 usually calls for attention to both size format and sidewall presentation. ER70-15 brings a vintage alphanumeric radial look, while 205/70R15 keeps the fitment in a modern metric radial format but still offers traditional whitewall treatments that suit a restoration-oriented sedan.
The right choice depends on whether the goal is visual authenticity in a broad era sense or a road-going presentation with a classic feel. For owners pursuing exact originality, tire markings and sidewall styling should be checked against marque references, period photos, or build-specific documentation rather than relying on size alone.
How does tire construction affect the appearance of a restored 1981 Jaguar XJ6?
On a restored 1981 Jaguar XJ6, construction and sidewall format influence how authentic the car looks at a glance. Both primary fitments here are radial, but the visual effect still differs between a modern metric marking such as 205/70R15 and an alphanumeric radial like ER70-15.
That difference matters because the sidewall is one of the most visible details on a formal sedan. A whitewall radial can reinforce the car’s luxury presentation, while an alphanumeric radial can better echo the period character many restorers want. Matching the tire’s visual language to the restoration goal often matters as much as the bare fitment itself.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1981 Jaguar XJ6?
Yes. A 1981 Jaguar XJ6 may share its original 15-inch tire fitment across sub-models, but modifications can still affect what works on the car. Aftermarket wheels, changes in wheel width, altered offset, suspension work, or ride-height changes can all influence clearance and tire choice.
That is especially important when choosing between available 205/70R15 products or evaluating the period-style ER70-15 fitment. Check the actual wheel dimensions on the car and inspect fender, steering, and suspension clearance before installation. A sedan that has been lowered or fitted with non-stock wheels should always be measured rather than assumed.
What should I inspect before driving a 1981 Jaguar XJ6 on new tires?
Before driving a 1981 Jaguar XJ6 on new tires, inspect the wheels for correct diameter and condition, verify lug hardware, and confirm the tire is seated and inflated properly. It also makes sense to look over suspension, steering, and brake components on a car of this age before regular road use.
Collector-era sedans often spend long periods parked, so the car itself can become the limiting factor rather than the new tire. Check for rubbing at full steering lock, signs of fluid leaks, and any uneven stance that might point to worn springs or bushings. A careful short test drive helps confirm tracking, clearance, and overall road readiness.
How should 205/70R15 tires on a collector 1981 Jaguar XJ6 be maintained?
205/70R15 tires on a collector 1981 Jaguar XJ6 should be maintained with regular pressure checks, visual inspections, and attention to age-related condition as well as tread. Even when mileage stays low, sidewall cracking, flat spotting from storage, cuts, bulges, and slow air loss deserve prompt attention.
Storage conditions matter almost as much as driving habits on a car like this. Keeping the Jaguar away from prolonged sun, excess heat, moisture, and ozone sources helps preserve the tire over time. It is also smart to move the car periodically or use appropriate support methods so the tires are not left carrying the same load in one position for months.
