Black Rhino Units and BFG all terrain

auldal

Member
Looking at getting the 17” Black Rhino Unit wheels with BFG 245/65/17 on my T32 4Motion. I have been told that they will fit my van which is standard height but I see that other posts are showing 225 size being fitted so just want to check. Also if I put these on instead of the std issue Devonports will it affect accuracy of Speedo reading. Advice from the experts on the Forum will be greatly appreciated.
 
Have a look on Willtheyfit.com where you can input various tyre sizes and calculate the speedo error among other things.
FYI. The standard size is 215/60/17 or 235/55/17.
These two are close enough to make virtually no difference to the speedo reading (-0.07%).
Your 245/65/17 will read 55mph when doing 60.
The 225/65/17 will read 57mph at 60.
I assume that the 225 was the same profile but both will under read although as speedo's tend to over read a little anyway the 225 will probably be very close.
 
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Thanks for your advice. Might just change wheels but keep same tyre size 235/55/17. The wheels are 8” compared to Devonports which are 7” (I think) so I believe that wouldn’t effect the speedo reading.
 
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