Types of Road Wheel 3 types of bolt-on car wheel are: 1) Pressed steel disc. 2) Light Alloy. 3) Wire spoked wheel. For further info see under their respective headings. ╞VëFÄΦ£ìF║PèF *ΣPèFPVPressed Steel Disc Wheel Widely used on ordinary family carsThe centre disc and rolled steel rim are welded together forming one strong unit. Very often the wheel is ornamented by a bright trim or embellisher. es of Road Wheel Pressed Steel Disc - Advantages Advantages of the pressed steel disc are: 1) Strength. 2) Easy to clean. 3) Relatively cheap. ssed Steel Disc Wheel Pressed Steel Disc - Disadvantages Disadvantages of the pressed steel are: 1) Relatively heavy. 2) Requires embellishment. 3) Restricts are flow to the brakes ssed Steel Disc - AdvantaLight Alloy Wheels Lightweight sports type wheel cast and machined from more more expensive metals eg, magnesium alloy. ssed Steel Disc - DisadvaLight Alloy Wheels - Advantages The advantages of light alloy wheels are: 1) Light in weight giving better road holding. 2) Strong. 3) Good appearance. ht Alloy Wheels Light Alloy Wheels - Disadvantages The disadvantages of the light alloy wheel are: 1) Expensive to buy. 2) Very easily damaged if a wheel strikes the kerb. ht Alloy Wheels - AdvantaWire Spoked Wheels The rim is attached to the hub by two or three rows of steel spokes placed at different angles, arranged tangentially and in opposition to each other giving a light weight wheel. ht Alloy Wheels - DisadvaWire Spoked Wheels - Advantages The advantages of the wire spoked wheel are: 1) A sporty appearance. 2) Strong and resilient. 3) Allows good air flow over the brakes. e Spoked Wheels Wire Spoked Wheels See first definition. e Spoked Wheels - AdvantaWire Spoked Wheels- Disadvantages 1) Expensive to buy. 2) Difficult to clean. 3) Unsuitable for tubeless tyres. 4) Spokes can work loose in time. e Spoked Wheels Types of Wheel Rim There are three types of wheel rim:1) Well base rim. 2) Flat base with detachable flange3) Split rim. e Spoked Wheels- DisadvanWell Base Rim The well base rim is used on cars and light goods vehicles. The well allows the tyre bead to pass over arim flange when the tyre is removedor fitted. The base usually has a 5 degree taper. es of Wheel Rim Flat base rim Incorporates a detachable flange. Used on certain goods vehicles. Removal of the flange allows large tyres which have a stiff bead to befitted easily on to the rim. l Base Rim Split Rim The split rim is used mainly on military vehicles and on certain goods vehicles. Tyres used usually have a rigid casing and bead structure. Splitting the rim is thequickest method of tyre removal. t base rim Road wheel sizes Have, over the years, become smaller with the advantages of: 1) Reduced unsprung weight. 2) Lower initial cost. 3) Wheel arches intrude less it Rim Advantages of Tubeless Tyres 1) Air loss such as a nail-type puncture is virtually eliminated. 2) Generally easier to repair. 3) Air loss due to permeability is very much reduced. 4) Overall weight of wheel is less.d wheel sizes Disadvantages of Tubeless Tyres 1) Unsuitable for spoked wheels. 2) Unsuitable for damaged or corroded wheels. 3) Stiffer, giving a slightly firm ride. antages of Tubeless TyresTyre Construction The two principal types of tyre construction used on road vehicles are: 1) Radial Ply 2) Cross Ply See the Icon for full details. advantages of TMIRROR BAOver Inflated Tyres Produce the following effects: 1) A hard ride. 2) Excessive centre of tread wear. EXCEL ╚zUnder Inflated Tyres Produces: 1) Heavy steerinng. 2) Tyres overheating especially at high temperatures. 3) Uneven tread wear. r Inflated Tyres Over Inflation - Effects When a tyre is over inflated the centre of the tread bulges out and lifts the shoulders of the tyre away from the road surface. The centre tread supports the vehicle and wears out quickly. er Inflated Tyres Cross-Ply Tyres - Advantages Advantages are: 1) Lighter steering at low speed. 2) Smoother ride at low speeds 3) Cheaper to buy. r Inflation - Effects Radial-Ply Tyres - Advantages 1) About 80% longer life 2) Lower rolling resistance, so fuel consumption is improved. 3) Side deflection is reduced. 4) An improved grip especially on wet roads.
