Kia EV2: Tyres and wheels / Tyre sidewall labeling

This comprehensive technical section identifies and describes the fundamental structural characteristics of the pneumatic tyre while providing the essential Tyre Identification Number (TIN) required for official safety standard certification and regulatory compliance on your Kia EV2.

The unique Tyre Identification Number (TIN) can be utilized to accurately identify your specific tyre batch in the rare event of a manufacturer safety recall, ensuring maximum protection for your Kia EV2.

1. Manufacturer or brand name

The external sidewall clearly exhibits the official manufacturer or trusted brand name, indicating the origin and quality standard of the rubber compound utilized on the Kia EV2.

2. Tyre size designation

Every tyre features a precise size designation clearly molded onto its exterior sidewall. This critical data is indispensable when selecting authorized replacement tyres for your vehicle to maintain optimal handling dynamics. The following detailed breakdown explains the precise meaning of each letter and number sequence within the standard tyre size designation code.

(These numbers are provided as an example only; your actual tyre size designation could vary depending on your specific vehicle configuration and market trim.)

Example tyre size designation:

P255/45R20 105V

• P: Applicable vehicle type prefix (tyres marked with the letter “P” are engineered specifically for passenger vehicles and light utility transport; however, modern electric platforms like the Kia EV2 may utilize alternative specialized load markings).

• 255: Nominal tyre section width measured precisely in millimeters from sidewall to sidewall.

• 45: Aspect ratio representing the percentage relationship between the tyre’s sectional height and its overall sectional width.

• R: Tyre internal construction code designating Radial ply architecture.

• 20: Corresponding wheel rim diameter specified in inches.

• 105: Load Index numerical code corresponding directly to the maximum weight-carrying capacity assigned to the tyre.

• V: Speed Rating Symbol indicating the certified velocity threshold. Consult the comprehensive speed rating chart in this section for additional operational details.

Wheel size designation

Original equipment alloy and steel wheels are also stamped with vital dimensional data required if replacement becomes necessary during the lifecycle of your Kia EV2. The following example outlines the exact structure of a standard wheel size designation.

Example wheel size designation:

8.5JX20

• 8.5: Nominal rim width measured in inches.

• J: Official flange contour and profile designation.

• 20: Nominal rim diameter measured in inches.

Tyre speed ratings

The reference table below outlines the standard speed ratings utilized across modern passenger vehicle tyres. This letter symbol forms an integral part of the sidewall size designation on your Kia EV2, denoting the maximum continuous velocity threshold at which the tyre is certified to operate safely under normal driving conditions.

Speed Rating Symbol	Maximum Speed
S	180 km/h (112 mph)
T	190 km/h (118 mph)
H	210 km/h (130 mph)
V	240 km/h (149 mph)
W	270 km/h (168 mph)
Y	300 km/h (186 mph)

3. Checking tyre life

Any tyres exceeding six years of age from their original manufacturing date should be promptly retired and replaced with fresh units to maintain structural integrity on your Kia EV2. The exact production date is stamped directly onto the tyre sidewall within the standardized Department of Transportation (DOT) serial code sequence. The DOT string comprises a combination of alphanumeric characters, with the final four digits explicitly denoting the precise manufacturing period.

DOT: XXXX XXXX OOOO

The initial segment of the DOT code identifies the manufacturing plant code, internal production specifications, and tread design, while the concluding four numeric digits represent the specific operational week and production year.

For example:

DOT XXXX XXXX 1626 indicates that the specific tyre was manufactured during the 16th week of the year 2026.

WARNING

Tyre age considerations

Always replace ageing tyres within the recommended operational timeframe. Neglecting to replace degraded tyres can result in sudden structural failure, potentially causing a dangerous loss of vehicle control and severe accidents on the road.

4. Tyre ply composition and material

Tyre ply structure refers to the number of distinct rubber-coated fabric and steel layers embedded within the carcass to support the vehicle weight. Manufacturers are mandated to disclose internal structural components, which typically incorporate high-tensile steel, durable nylon, and polyester cords. Standard construction codes include the letter R for radial architecture, D for diagonal bias construction, and B for belted-bias configurations.

5. Maximum Inflation Pressure

This numerical value indicates the absolute highest cold air pressure threshold permitted for the tyre. Never exceed this specified maximum inflation limit during servicing. Always consult the official vehicle placard located on your Kia EV2 for the recommended daily operating pressures.

6. Maximum load rating

This metric designates the absolute maximum weight in kilograms and pounds that an individual tyre can structurally support safely. When executing routine tyre replacements on your Kia EV2, always install replacement units featuring load ratings equal to or exceeding the original factory specification.

7. Uniform Tyre Quality Grading

Uniform Tyre Quality Grading Standards (UTQGS) data is molded directly onto the outer sidewall area positioned between the tread shoulder and maximum section width where applicable.

For example:

• Treadwear 200

• Traction AA

• Temperature A

Rubber compounds undergo natural chemical degradation over time, even when the vehicle remains parked or experiences minimal operational mileage. Regardless of remaining tread depth, industry experts recommend replacing tyres after approximately six years of regular service, while exposure to severe ambient heat or heavy payload conditions can significantly accelerate this aging timeline.

Tread wear

The tread wear grade is a comparative performance metric determined through controlled testing conducted on designated government evaluation courses. For instance, a tyre rated at 150 would theoretically deliver one and a half times the tread longevity of a baseline tyre rated at 100 when evaluated under identical test conditions.

Actual on-road performance will naturally vary based on individual driving styles, climate patterns, road surface abrasiveness, and proper maintenance practices.

Tread wear grades are permanently molded onto the sidewalls of passenger vehicle tyres, and factory-equipped options for your Kia EV2 may feature specific gradings tailored to electric vehicle efficiency.

Traction — AA, A, B, and C

Traction performance grades range from highest to lowest across categories AA, A, B, and C, quantifying the stopping capability of the tyre on wet asphalt and concrete test surfaces under regulated government testing protocols. Tyres rated lower may exhibit reduced grip during emergency braking maneuvers.

It is important to note that these traction grades measure strictly straight-line braking performance and do not evaluate acceleration capabilities, cornering g-forces, or hydroplaning resistance.

Temperature — A, B, and C

Temperature grades range from A through C, denoting the thermal resistance and heat dissipation efficiency of the tyre when tested on a specialized indoor laboratory test wheel.

Prolonged exposure to high internal operating temperatures causes structural material breakdown and shortens overall service life, while excessive heat buildup can induce sudden catastrophic failure. Ratings of A and B reflect performance standards surpassing the mandatory legal minimum requirements.