Overview
The Michelin Primacy MXM4 ZP is a premium touring all-season run-flat tyre designed for drivers of luxury sedans and coupes seeking a blend of comfort, reliable year-round traction, and peace of mind in the event of a puncture. Targeted at both everyday motorists and enthusiasts, the Primacy MXM4 ZP (Zero Pressure) is engineered to deliver quiet, refined highway manners, balanced handling, and dependable wet performance. Its run-flat technology allows continued driving for a limited distance after air loss—an attractive proposition for those who value convenience and safety, particularly in urban and suburban US settings. Notably, this tyre is often chosen as original equipment on models from BMW, Mercedes-Benz, and Lexus, reflecting its focus on luxury touring performance and road comfort.
Key Specs
| Type | All-season touring run-flat (Zero Pressure) |
| Available sizes range | 17″ to 19″ diameters; common: 225/50 R17, 245/45 R18 |
| Speed rating examples | V, W |
| Load index examples | 94, 96 |
| Tread pattern | Asymmetric, optimized for quiet ride and even wear |
| Technology highlights | Run-flat sidewall reinforcement, Michelin Helio Compound™, MaxTouch Construction™, Green X® for low rolling resistance |
Performance: Dry
On dry pavement, the Primacy MXM4 ZP delivers a confident, stable ride, characteristic of Michelin’s premium touring line. Steering response is direct and progressive, with enough feedback to satisfy drivers who appreciate road feel without harshness. Cornering grip is ample for everyday driving and spirited highway maneuvers, provided expectations are set for a touring, not ultra-high-performance, tyre. Emergency braking is reassuringly consistent, with short, drama-free stopping distances in typical sedan and coupe applications. Compared to conventional non-run-flat tyres, there’s a slightly firmer feel through the seat, a byproduct of the reinforced sidewalls, but the trade-off is security in the event of a puncture. Overall, dry handling is stable, predictable, and well-matched to the tyre’s luxury touring focus.
Performance: Wet
Wet weather is where the Primacy MXM4 ZP’s all-season credentials stand out. The silica-enriched Helio Compound™ and full-depth sipes provide commendable traction in rain, with effective water evacuation that minimizes the risk of hydroplaning. Braking performance in the wet is strong for the segment, with progressive pedal feel and confidence-inspiring stability. In moderate to heavy rain, the tyre maintains its composure, resisting the twitchiness that can afflict some run-flats on slick roads. Acceleration and cornering grip remain controlled, though, as with most touring tyres, aggressive driving in the wet will invite some understeer before the limits are reached. Importantly, wet performance is preserved across the tread’s lifespan thanks to the thoughtful siping and compound design.
Performance: Snow & Ice
As an all-season tyre, the Primacy MXM4 ZP is serviceable in light snow and slush, but not a substitute for dedicated winter tyres in harsh climates. The tread features multiple biting edges and a pliable compound that deliver moderate traction for unplanned snow events or occasional flurries. Light to moderate snow braking and acceleration are controlled, but deeper accumulations and icy surfaces push the tyre beyond its design envelope. For drivers in regions with regular or severe winter conditions, a switch to a true winter tyre is strongly advised for optimal safety and control.
Comfort & Noise
Michelin has prioritized comfort and quietness in the Primacy MXM4 ZP, and it shows in real-world driving. Thanks to the MaxTouch Construction™ and careful tread tuning, road imperfections are soaked up better than many other run-flat competitors—though some sharp impacts are transmitted due to the reinforced sidewalls. Highway cruising is impressively serene, with wind and engine noise often more noticeable than tyre roar. City speeds reveal only a faint hum over coarse surfaces, and tread pattern noise is well suppressed even as the tyre wears. Overall, this is one of the quieter run-flat options for luxury touring cars, making it a strong choice for drivers who value refinement and low fatigue on long journeys.
Durability & Economy
Longevity is a strong suit of the Primacy MXM4 ZP, with many users reporting consistent wear patterns and solid tread life—especially when maintained at proper pressures. Michelin’s MaxTouch Construction™ helps distribute forces evenly, reducing irregular wear. The tyre’s UTQG rating (typically 500 A A in sizes like 225/50 R17) reflects expectations for touring-class durability. Rolling resistance is lower than many older run-flat designs, aided by the Green X® technology, which can help maintain or slightly improve fuel economy compared to some rivals. It’s worth noting that run-flat tyres often wear out slightly sooner than their conventional counterparts, but the MXM4 ZP’s real-world performance is competitive for its class. Regular rotation and alignment are key to maximizing tread life.
Sizes & Alternatives
The Michelin Primacy MXM4 ZP is available in a range of sizes suited to popular luxury sedans and coupes, including:
- 225/50 R17 94V (BMW 3 Series, Lexus ES, Mercedes-Benz C-Class)
- 245/45 R18 96W (BMW 5 Series, Cadillac CTS, Audi A6)
Other available fitments cover 17- to 19-inch wheels, supporting a variety of premium vehicles.
Main competitors in the US include:
- Bridgestone DriveGuard
- Continental ContiProContact SSR
- Pirelli Cinturato P7 Run Flat
- Goodyear Eagle LS-2 RunOnFlat
- Dunlop SP Sport 5000 DSST
Drivers should compare based on comfort, price, and OE compatibility when considering alternatives.
Pros & Cons
Pros
- Excellent ride comfort and quietness for a run-flat tyre
- Confident dry and wet traction with predictable handling
- Reliable run-flat capability for added safety and convenience
- Good treadwear and even wear patterns
- Available in many OE sizes for luxury sedans and coupes
Cons
- Higher price than many conventional touring tyres
- Limited snow/ice performance (not a winter substitute)
- Some loss of ride plushness versus non-run-flats
- Not as sporty as summer or UHP run-flat options
- Availability may be limited for less common wheel sizes
Verdict
The Michelin Primacy MXM4 ZP stands out as a top-tier choice for US drivers seeking a premium all-season run-flat tyre for their luxury sedans or coupes. Its blend of serene comfort, quiet cruising, and reliable dry/wet performance makes it well-suited for daily commuting and highway travel, especially for those who value the assurance of run-flat technology. While it commands a higher price and isn’t designed for harsh winter use, the MXM4 ZP’s strengths in wear, refinement, and real-world usability justify its position in the premium segment. For drivers prioritizing safety, comfort, and peace of mind—especially those in urban and suburban areas—the Primacy MXM4 ZP is an excellent investment. Those in snowbelt regions or seeking ultimate sporty handling should consider seasonal or performance-specific alternatives.
You mention this tire is often original equipment for BMW, Mercedes, and Lexus sedans. For an older BMW 3 Series, do these really provide a noticeable balance of road feel without making the ride too harsh?
Yes, the Michelin Primacy MXM4 ZP is known for delivering a good mix of road feel and comfort, especially on luxury sedans like the BMW 3 Series. They usually offer precise steering and a more connected driving experience without being overly stiff, so you should notice a balanced ride that isn’t too harsh for daily use.
I noticed the Primacy MXM4 ZP uses Michelin’s Helio Compound and MaxTouch Construction. Have you experienced any difference in tread life or fuel economy compared to standard all-season tires on your sedan?
Users often report that the Helio Compound and MaxTouch Construction help the Primacy MXM4 ZP last longer than many standard all-season tires, especially under typical driving conditions. Many also find a slight improvement in fuel economy due to reduced rolling resistance, though the difference can vary depending on driving habits and vehicle type.
Given the focus on safety and convenience, how far can you realistically drive on these after a puncture before needing a repair or replacement?
With the Michelin Primacy MXM4 ZP run-flat tires, you can typically drive up to 50 miles at a maximum speed of 50 mph after a puncture. This gives you enough range to reach a repair shop or a safe location, but you should have the tire repaired or replaced as soon as possible.
Does the run-flat technology in the Primacy MXM4 ZP significantly impact ride comfort compared to standard non-run-flat Michelin touring tyres, especially for longer highway trips?
The run-flat technology in the Primacy MXM4 ZP does make the tire feel firmer than standard non-run-flat Michelin touring tires, which can slightly reduce ride comfort, especially on rough roads. However, for longer highway trips, most drivers still find the comfort acceptable, with the main benefit being the added peace of mind from run-flat capability.
Can you tell me more about the actual range I could drive after a puncture with these run-flats? Is it enough for most suburban commutes in the US?
With the Michelin Primacy MXM4 ZP run-flats, you can typically drive up to 50 miles at speeds up to 50 mph after a puncture. For most suburban commutes in the US, this is usually enough to reach home or a tire service center, so you shouldn’t have much trouble getting to safety.