GB/T 3487-2024 Passenger car rims
1 Scope
This document specifies the designation, contour and dimensions of 5° tapered (drop-centre) rims primarily intended for passenger cars.
This document is applicable to the passenger car rims.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2933 Wheels and rims for pneumatic tyres—Vocabulary, designation and marking (GB/T 2933-2009, ISO 3911: 2004, IDT)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2933 apply.
4 Dimensions and codes of rim contour
The dimensions and codes of rim contour are shown in Figure 1.
Key:
A — specified rim width;
B — flange width;
C — location and dimension of flange radius;
D — specified rim diameter;
DF — diameter of bead seat flat hump;
DR — diameter of bead seat round hump;
F1, F2 — position and dimension of the valve hole in the rim;
G — flange height;
H — well depth;
L — well width;
M — well position and dimension;
P — bead seat width;
R1: flange joint radius;
R2: flange radius;
R3: bead seat arc radius;
R4: well top arc radius;
R5: well bottom arc radius;
R6: flange edge fillet radius;
R7: well side arc radius.
V — dimension of valve hole or well;
α — well bottom angle;
β — bead seat angle.
Note 1: Dimensions marked with * are related to the mounting and dismounting of tyre on the rim, and they are the minimum contour and position dimensions of the well.
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Dimensions and codes of rim contour
5 5° tapered (drop-centre) rims
Annex A (Informative) Comparison of clause/subclause numbers between this document and ISO 4000-2:2021
