I’ve made it through the world tour and selected many great cars and am now onto further levels. Currently at level 75. I have a 1999 BMW V12 LMR - - R1 998. When I race on the world tour it is only legal on some tracks/events. However when I go to online racing this vehicle is shown as the lesser 1999 BMW V12 LMR - - R1 971. In fact the cars available on the world tour are different than the cars available to online races. I have 2,300,000 credits and have not purchased anything in the marketplace. Also, how do I tune a vehicle and then save it.
All the events in World Tour mode have some kind of restrictions: usually PI plus some optional ones (ie Body Family must be Prototype 1). You can see those by pressing X on event lobby.
When you’re online you’re probably choosing a car from “rental” garage instead of your own garage. So when selecting a car go to left until you see “View garage” and there you should find all the cars you own on career mode.
You can tune your cars by going to Upgrade menu in Career mode. There you can buy parts in Upgrade shop and adjust the settings in Tune setup. When tuning or upgrading the car press START and you can save the current settings or load an old one. You can also tune your car while test driving or in pre-race menu in offline mode. But you can’t buy any parts from there. You’ll also find some premade setups online from Storefront.
When online there are two icons, one for manufacturers and on the far left a house / garage icon for your own cars.
The first will have all cars available to you stock. The latter your purchased cars including liveries and tunes saved to them.
To save a tune you can save it to the car itself, or to your catalogue (same with liveries).