Aftermarket rear wheel fit

[Spunkmeyer]

Will 10.5x20 ET 25 fit the RCF with coilovers? Tyres not purchased yet but likely 295/30/20
 

willtheyfit quotes +9.7mm inside shift and +22.4mm outside shift (compared to OEM with 275/35/19)

can’t find an example of these as often not all the info is shown. But there are 11” up to 12” rear wheels used. All in the offset. 

Debate:

[B1RMA]

If it's any help my rear wheels are 20X10.5 ET 45 and there is space between inner tyre wall 285/30/20 of about 25mm+ to the rear shock absorber strut. Outside fills the arch gap nicely right to the edge.

[Spunkmeyer]

Thanks yes the outside edge was my concern, the extra 0.5” width pulls the ET back in towards OEM. Thanks for the reply. 

[Cactus]

You try fitment industries?

 

https://www.fitmentindustries.com/wheel-offset-gallery?make=Lexus&model=RC+F&year=2018

[Spunkmeyer]

Cheers, yeah seen this.  Some of the numbers shown had me wondering how accurate they are. And then most are bagged/slammed show cars so wasn’t an easy point of reference. Thanks 🙏