dsmdylan

Has anyone gotten the adaptive cruise control to work with 35" tires?

xxaarraa

I had 34.1" tires for a little bit and adaptive cruise did NOT work.

Texas E63

I ran 305's( 34" -ish ) on our 63 and distronic was fine.... ESP occasionally complained however....

xxaarraa

@Texas E63 How long did you have the 34's on? When I mounted the 34s, distronic worked for a little bit, then got intermittent then stopped working altogether. Likewise, when I went down to 33"s, distronic did not work right away, but after a few hundred miles, it started working again. My guess is that the car has a 'buffer' / staging area where it collects wheel speed sensor data and determines if actuals versus observed values are within tolerance, and then enables or disables distronic.

This is entirely my own hypothesis, I have no facts to back this up so YMMV!

Texas E63

I ran them and a set of 35/12.5/20's - had each for about 4-6k on the 63 before it was totalled out. It was tuned with Eurocharged E85 tune at the time we did the rims/tires, so they might have coded out via STAR or solved for that without telling me .....

dsmdylan

When you say it didn't work, what exactly did it do? Was there a light on the dash or did it just give you some kind of error when you tried to activate it? Did cruise control not work at all, or was it just the "adaptive" part that didn't work?

dsmdylan

Were they 305/55-20?

xxaarraa

Both passive cruise control as well as adaptive cruise control simply did not activate. "distronic plus inoperative" error message on console when I tried to activate each time.

Texas E63

yes- but the Toyo at2's in that spec were freakishly big.... they were wider and large OD then the 35/12.5's for some reason....

knowbenz

It works with 37s if you have portals.
Before portals it was hit or miss with 34s, 33s no issue