X-ray　method　was　used　in　this　study　to　determine　the　distribution　of　residual　stresses　in　eight　various　wheels.　The　effects　of　wheel　shape　and　machining　processes　on　residual　stress　distribution　were　analyzed.　Measuring　points　were　arranged　along　a　certain　radial　direction　of　each　wheel.　The　radial　and　circumferential　residual　stress　at　each　measuring　point　was　measured　by　X-ray　residual　stress　instrumentation.　The　experimental　results　show　that　the　8　wheels　have　the　similar　trend　of　residual　stress　distribution.　Compared　with　the　machining　surface,　the　level　of　compressive　residual　stress　of　the　shot-peening　surface　is　obviously　higher.　As　a　whole,　wheels　with　S-shaped　spokes　have　the　excellent　distribution　of　residual　stresses.