Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat Car Tyre

Run Flat Car Tyre Developed on the Nurburgring, Built to Keep Moving After a Puncture

A performance sedan running on run-flat tyres usually doesnt carry a spare wheel at all. That makes the tyre itself the only safety net if a puncture happens on the highway. The Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat features Yokohamas Zero Pressure System, specifically for this situation, allowing the car to continue moving at reduced speed for a limited distance after a complete loss of air pressure.

Yokohama developed the Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat on the Nurburgring circuit in Germany, one of the most demanding test tracks in the world, and the tyre later won Best Tyre in the 2015 Wheels Tyre Test. Its original equipment on genuine performance vehicles, including Audis S4 and S5 and BMWs M Series.

Product Overview

The Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat comes with a 93 load index and a Y speed rating. That means the tyre can handle a maximum load of 650 kg per tyre and can be driven at a maximum speed of 300 km/h. It uses radial construction and comes with a warranty split into 1.6 years of unconditional cover and 3.6 years of standard cover.

The S designation on this size refers to Yokohamas run-flat construction, which reinforces the tyres sidewall enough to support the vehicles weight even after the tyre loses all internal air pressure. Yokohama rates the tyre for excellent dry and wet grip, a smooth ride and low noise on its own product data, each tracing back to a specific piece of engineering.

The Y speed rating attached to this tyre, good for up to 300 km/h, exceeds what almost any driver will actually use on a public road. What that rating really signals is structural margin, a casing and belt package built to stay stable well beyond normal driving speeds, which carries over into extra composure during ordinary hard cornering and braking.

Performance and Key Features

The Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat has five pieces of engineering below that cover run-flat capability, dry handling, wet grip, cabin noise and rim protection.

1. Run-Flat Capability

A sudden puncture on a highway is one of the more dangerous moments a driver can face, especially at speed. The Zero Pressure System reinforces the sidewall structure of the Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat to continue supporting the vehicle after a complete loss of air pressure.

This lets a driver continue at a reduced speed for a limited distance, enough to reach a safe location or a garage without stopping on the shoulder of a highway. A car built without a spare wheel depends entirely on this capability, and thats exactly the vehicle category to which this tyre is fitted as original equipment.

2. Dry Handling

An asymmetric tread pattern splits this tyres job across two zones. Wide outboard shoulder blocks sit on the treads outer edge, adding stability specifically for high-speed cornering and hard acceleration.

A Matrix rayon body ply supports this from inside the tyres construction, improving steering precision by keeping the tyres shape more consistent under load. Independent testing has consistently rated this tyres dry handling as a genuine strength, the area where it competes most directly with premium rivals.

3. Wet Weather Grip

The inner portion of the tread features increased groove area to improve wet-road performance, working alongside a compound Yokohama calls Sport Compound 5S. Orange oil and microsilica in this compound keep the tread rubber more flexible in wet, cooler conditions, improving its adhesion to the road surface.

Independent wet-grip test results have been more mixed than the tyres dry-handling scores, as some newer rivals have closed the gap in this area. Yokohamas own wet-grip rating on the EU label still lands at a solid B, a respectable result for a tyre built primarily for dry-weather cornering.

4. Cabin Noise

A tread pattern with evenly spaced blocks tends to generate a droning, repetitive noise as speed increases. Variable-pitch tread on the Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat deliberately varies the spacing, breaking up the rhythm before it builds into a consistent hum.

This carries real weight on a performance sedan. These cars are often driven daily, not reserved purely for weekend use, and a quieter cabin makes that daily use considerably more comfortable.

5. Rim Protection

A kerb strike or a tight parking manoeuvre can damage an alloy wheel just as easily as it can damage a tyre, particularly on the low-profile sizes typical of performance cars. A rim protection strip built into the tyres design adds a buffer between the wheel and whatever it contacts.

This detail is more crucial on this tyre than on a standard touring tyre, since performance wheels tend to be both larger and more expensive to replace than a standard steel wheel.

6. Everyday Ownership Experience

Most owners of this tyre size are running an Audi S4, an S5, a BMW from the M Series or a Mercedes-Benz C-Class or E-Class, cars bought as much for driving engagement as for daily transport. The Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat is built around that dual role, sharp enough for a spirited drive and composed enough for a daily commute.

An owner who never experiences a puncture still benefits from this tyres dry handling and cornering stability on every normal drive. The run-flat capability sits in reserve for the one situation that actually calls for it, doing nothing until the day it turns into the single most important feature on the car.

Performance sedan owners often split opinions on run-flat tyres, since the firmer ride is a genuine trade-off against the safety of not being stranded after a puncture. An owner who bought their car specifically because it came without a spare wheel has already made that trade-off decision. This tyre is built to deliver the strongest possible dry handling within that constraint.

Ideal Usage and Who Should Buy

The Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat suits performance sedan and coupe owners who want genuine track-honed handling along with the safety margin of run-flat capability.

It suits

• Performance sedans, coupes and high-powered sports cars
• Vehicles without a spare wheel that rely on run-flat protection
• Daily driving combined with spirited weekend use
• Owners who value dry-weather cornering and steering precision
• Buyers replacing worn OE tyres with a like-for-like performance option

Its a less natural fit for

• Off-road or rough-terrain driving
• Owners prioritising the lowest possible road noise above all else
• Buyers seeking the very latest wet-grip and rolling resistance figures from newer rivals

Vehicle Compatibility and Fitment

The Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat can be used as a good replacement tyre for vehicles such as:

• Audi S4 (selected variants)
• Audi S5 (selected variants)
• BMW M Series (selected variants)
• Mercedes-Benz C-Class (selected variants)
• Mercedes-Benz E-Class (selected variants)
• Volkswagen Passat (selected variants)

Note: Depending on the variant and manufacturer specifications, the Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat may also be used on other car models with similar wheel configurations.

Before purchasing, always confirm that 245/40 R 18 fits the recommended tyre size and load rating for your vehicle.

Pros and Cons

The Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat pairs Nurburgring-honed dry handling with run-flat protection, and that combination shapes where it earns its price. However, it comes with its own set of pros and cons, including:

Final Verdict

Most performance tyres force a choice between sharp dry handling and everyday comfort. The Yokohama Advan Sport V105 245/40 R 18 Tubeless 93 Y S Run Flat adds a third consideration most rivals skip entirely, the ability to keep driving after a complete loss of air pressure, engineered specifically for cars that never carry a spare wheel.

For an S4, S5 or M Series owner who drives their car daily and pushes it hard on weekends, that combination of Nurburgring-tested handling and genuine run-flat protection is a more complete answer than chasing the last percentage point of wet grip a newer rival might offer.

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