Listed are full spes for this 275/30R21 Michelin Pilot Sport 4 S Summer tire — including load/speed ratings, certifications (3PMS / studdable / run-flat / XL), UTQG treadwear/traction/temperature grading, and shipping details for Ontario and Quebec.
Why choose the 275/30R21 Michelin Pilot Sport 4 S?
275/30R21 Michelin Pilot Sport 4 S is positioned as a summer / performance focused / passenger fitment tire with clear Ontario and Quebec delivery details.
Free shipping • 1–3 business days (Ontario and Quebec)In stockOntario & Quebec delivery focusSpecs, fitment notes, and FAQ on page
Best fit if you want
Warm weather grip, responsive steering, and sportier handling.
Drivers who already switch to dedicated winter tires when temperatures drop.
Fitments that require XL (extra load) capacity.
EV fitments where tire load, torque, rolling resistance, and noise can matter more.
Double-check if you need
Quebec winter tire compliance or cold weather winter driving.
A one tire year round setup for Ontario or Quebec.
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Quick Specs
Size: 275/30R21
Brand / Model: Michelin Pilot Sport 4 S
Season: Summer
Vehicle Type: Passenger
EV Compatible: Yes
Load / Speed: 98(Y) (Load index 98 supports up to 750 kg per tire; speed rating (Y) rated up to 300 km/h)
Certifications: XL (Extra Load)
Delivery (Ontario & Quebec): Free shipping • 1–3 business days (Ontario and Quebec)
275/30R21 Michelin Pilot Sport 4 S Summer
XL (Extra Load) rating supports higher inflation pressure and carrying capacity than standard load tires.
What these tire specs mean
Load Index 98 is the tire’s standardized carrying capacity, supporting up to 750 kg per tire. Use it to confirm the tire meets or exceeds the load rating listed on your vehicle placard.
Speed Rating (Y) indicates the tire’s maximum sustained speed capability under proper load and inflation. This is approximately 300 km/h under proper load and inflation.
UTQG 300 AA A is the manufacturer treadwear, traction, and temperature grading system. It is useful for comparing tires from the same brand, but it should not be treated as an exact mileage promise.
Summer tires are built for warm weather grip and should not be used as winter tires in Ontario or Quebec cold weather conditions.
XL means Extra Load. These tires are designed to carry higher loads at higher inflation pressures than a standard load tire in the same size, which matters for heavier vehicles, loaded vehicles, or factory fitments that require XL.
EV Compatible means the tire is marked as suitable for electric vehicles, where load, torque, rolling resistance, and noise can matter more.
Vehicle Type helps identify whether the tire is intended for passenger, light truck, commercial, or similar service categories.
Warranty coverage is manufacturer backed and depends on normal use, proper maintenance, rotation, inflation, and alignment conditions.
How this tire is positioned
275/30R21 Michelin Pilot Sport 4 S is positioned as a summer tire built around a 275 mm section width and 21-inch wheel fitment.
In practical terms, this size combines a 30-series sidewall of about 83 mm with a 21-inch wheel diameter, which is useful when matching an existing tire size and wheel setup.
Feature wise, this tire indicates an XL extra load rating, load index 98 and speed rating (Y) (~300 km/h), UTQG 300 AA A when provided by the manufacturer.
About the 275/30R21 tire size
The 275/30R21 size breaks down as follows:
275 — tread width in millimetres
30 — sidewall height as a percentage of tread width (approx. 83 mm)
R21 — fits a 21-inch rim
The 275/30R21 size is commonly found on performance vehicles and heavy duty trucks. If you’re matching an existing set, confirm the full size marking on your sidewall before ordering.
Key features — Michelin Pilot Sport 4 S in 275/30R21
XL (Extra Load): designed for higher load capacity at higher inflation pressure than standard load tires.
EV compatible design.
UTQG: 300 AA A — treadwear, traction, and temperature grading to help compare similar tires.
Load/Speed: 98(Y) — load index 98 supports up to 750 kg per tire, while speed rating (Y) is rated up to 300 km/h.
Warranty
Warranty: 50000
This warranty is provided by Michelin and applies subject to normal use and service conditions. Contact us or the manufacturer directly for claim procedures and exclusions.
Vehicles that commonly use 275/30R21 tires
Examples from our vehicle fitment lookup include:
2024 BMW 530i
2024 BMW 540i
2024 BMW i5
2024 Mercedes-Benz E350
2024 Mercedes-Benz E450
2022 BMW M760i
2020–2021 Polestar Polestar 1
2017 BMW 740i
2017 BMW M760i
2016–2018 Audi S7
More vehicles that use this size
2014–2018 Audi RS7
2011–2015 BMW 740Li
2010–2015 BMW 760Li
2009–2015 BMW 750Li
2009–2022 BMW 750i
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Frequently asked questions — 275/30R21 Michelin Pilot Sport 4 S Summer
What does the 275/30R21 tire size mean?
The 275/30R21 size indicates a tread width of 275 mm, a sidewall ratio of 30% (approximately 83 mm tall), and a 21-inch rim diameter. This size is commonly found on performance vehicles and heavy duty trucks.
Is the 275/30R21 Michelin Pilot Sport 4 S a Summer tire?
Yes — the 275/30R21 Michelin Pilot Sport 4 S is categorized as a Summer tire.
What does the 98(Y) rating mean on the 275/30R21 Michelin Pilot Sport 4 S?
On the 275/30R21 Michelin Pilot Sport 4 S, the service description 98(Y) indicates a load index of 98 and a speed rating of (Y) (approximately 300 km/h). The load index is the tire’s standardized carrying capacity, while the speed rating is the maximum sustained speed under proper load and inflation. Always match or exceed your vehicle manufacturer’s required load and speed ratings.
Is the 275/30R21 Michelin Pilot Sport 4 S 3PMS rated?
No — the 275/30R21 Michelin Pilot Sport 4 S is not listed as 3PMS rated.
Is the 275/30R21 Michelin Pilot Sport 4 S studdable?
This tire, 275/30R21 Michelin Pilot Sport 4 S is not studdable. Contact us for any questions.
Does the 275/30R21 Michelin Pilot Sport 4 S support run flat driving?
No — the 275/30R21 Michelin Pilot Sport 4 S is not a run flat.
Is the 275/30R21 Michelin Pilot Sport 4 S an XL (extra load) tire?
Yes — the 275/30R21 Michelin Pilot Sport 4 S carries an XL (extra load) rating, enabling it to handle higher inflation pressures and greater load capacities than a standard load equivalent.
What does speed rating (Y) mean on the 275/30R21 Michelin Pilot Sport 4 S?
Speed rating (Y) on the 275/30R21 Michelin Pilot Sport 4 S corresponds to a maximum sustained speed of approximately 300 km/h under full load. Always obey posted speed limits regardless of tire rating.
Can I order the 275/30R21 Michelin Pilot Sport 4 S with delivery to Ontario or Quebec?
Yes — XYZTires ships the 275/30R21 Michelin Pilot Sport 4 S to addresses across Ontario and Quebec. Free shipping • 1–3 business days (Ontario and Quebec).
Why buy the 275/30R21 Michelin Pilot Sport 4 S from XYZTires if another tire looks cheaper?
A lower sticker price is only one part of the tire purchase. Compare the final delivered cost, shipping time, stock status, fitment details, and whether the tire category matches how you drive. XYZTires focuses on clear Ontario and Quebec delivery details, product specifications, and fitment context so you can compare the real delivered value, not just the first price you see.