Honghigh Tech
HP321 255/45R20 105/XLH High Performance Tire
HP321 255/45R20 105/XLH High Performance Tire, aimed at high performance selection needs for mid-to-high-end vehicles. This page corresponds to one individual specification; the specification table lists parameters such as rim, section width, overall diameter, standard pressure and UTQG, making it easy to verify against original vehicle requirements and request a quote.
- Tire size
- 255/45R20
- Load index
- 105/XL
- Speed rating
- H
- Standard rim
- 8½J
PRODUCT DESCRIPTION
The HP321 255/45R20 105/XLH High Performance Tire is a single-size product in the HP321 series, suitable for procurement selection in the high performance tire category. HP321 High Performance is aimed at mid-to-high-end vehicles, combining RST reinforced sidewall support, heat-resistant sidewall materials and bead area design, with a focus on support capability and driving response.
This specification is intended for 20-inch rim conditions. When comparing other sizes of the same model, verify specification markings, load, and speed requirements separately; similar outer diameters or the same rim diameter do not mean they can be directly interchanged.
Procurement can be further discussed around actual vehicle application, daily road conditions, target quantity and transportation destination. Packaging, process, service and FAQs below explain the relevant matters respectively; sizes and configurations use the specification table on this page as the unified verification entry point.
PRODUCT PARAMETERS
The following parameters correspond to the product configuration on this page. Please check the size, load, speed rating and rim conditions against the original vehicle tire markings; the standard pressure listed in the table is for specification verification, and the actual tire pressure used by the vehicle shall be confirmed according to the vehicle manufacturer's requirements.
| Product model or plan | HP321 |
|---|---|
| Product positioning | High-performance tires |
| Applicable vehicle types | Mid-to-high-end vehicles |
| Product SKU | HH-HP321-255-45R20-105-XLH |
| Rim diameter | 20 in |
| Aspect ratio | 45 % |
| Tire size | 255/45R20 |
| Load index | 105/XL |
| Speed rating | H |
| Standard rim | 8½J |
| Inflated section width | 255 mm |
| Inflated overall diameter | 738 mm |
| Standard inflation pressure listed on the official website | 290 kPa |
| UTQG (3T) index | 320AA |
PRODUCT FEATURES
Starting from the structure and usage requirements, learn about the main features of the HP321 high-performance tire.
Enhanced sidewall support
The official website introduces RST technology and deformation-resistant sidewall structure, addressing sidewall support needs under pressure loss conditions.
RST technology
Heat-resistant sidewall material
Adopts the heat-resistant rubber layer design described on the official website to provide corresponding rigidity support for the sidewall.
Sidewall design
Bead structure optimization
The bead area design distributes stress between the tire and the rim, focusing on bead fit performance.
Structural design
SERVICE AND COMMUNICATION
Advance communication around selection, material verification, and delivery preparation.
Item-by-item specification verification
When inquiring, verify requirements against tire model, size, load and speed markings, and list different configurations in the supply communication where they exist.
Configuration and packaging negotiation
Discuss product configuration, packaging, and quantity arrangements according to application and transport conditions; the quotation and order define the actual supply scope.
Consolidated issue feedback
Items pending confirmation in the data are listed together, making it convenient for buyers to provide original vehicle markings, images or usage conditions and continue selection.
PACKAGING AND TRANSPORTATION
Packaging is arranged around carcass protection, specification differentiation, and transport conditions; the specific form and loading quantity are clarified during order communication.
Single tire protection
Depending on the supply method, carcass strapping or appropriate external protection may be used to reduce handling friction and keep the bead and sidewall areas free from compression.
Protection form confirmed with order
Model and batch identification
Group by product model, size, and quantity, and retain identification for easy verification upon receipt; avoid mixed loading and mixed recording of different sizes or load configurations.
HH-HP321-255-45R20-105-XLH · Verify by specification group
Loading and transportation arrangements
Negotiate bulk, pallet, or other loading forms according to destination and transport method, focusing on stacking stability, dryness, and light-shading conditions.
Loading and protection plans confirmed according to transportation conditions
PROCESSING TECHNOLOGY AND VERIFICATION
The following is an industry process description for tire manufacturing and finished product verification, to help understand how the relevant structures are formed.
Sidewall material and structure preparation
Prepare heat-resistant rubber layers and related reinforcement components oriented toward enhanced sidewall support, in coordination with the established tire structure.
Bead and support structure combination
Combine the carcass, bead, and sidewall support area, focusing on component positioning, interfaces, and rim fit conditions.
Building and vulcanization shaping
Form the tread and reinforcement structure into a whole through tire building and vulcanization processes, preserving the designed profile and pattern.
Finished product and fitment review
Review specification markings, structural appearance, and assembly conditions; the applicable requirements for special support configurations are clarified during supply communication.
PRODUCT TYPE
Tire product types
High-performance tires
HP321 High Performance targets mid-to-high-end vehicles; the official website highlights RST reinforced sidewall support technology, heat-resistant sidewall material and bead structure optimization. The official website provides 9 specification records corresponding to 17 to 20 inch rims; specific vehicle and rim fitment must be verified item by item.
FAQ
255/45R20 105/XLH How to verify vehicle fitment?
First check the 255/45R20 size and rim conditions allowed by the original vehicle, then check the load and speed markings. The configuration on this page is 105/XLH and cannot be replaced merely because it belongs to the same HP321 series or looks similar. When inquiring, you may attach the original vehicle markings and intended use for further confirmation.
Can the standard inflation pressure in the specification table be used directly for daily inflation?
The specification table retains the standard inflation pressure listed on the official website; this value cannot be used directly as the recommended operating tire pressure for all vehicles. Daily cold tire pressure should be checked according to the vehicle manufacturer's markings and combined with actual operating conditions.
Can packaging be adjusted according to transport requirements?
You can state the quantity, destination, and transport method during inquiry, and discuss single tire protection, grouping identification, and loading form. Packaging quantity, pallet method, and delivery time are subject to the actual quotation and order agreement.