245/40/19 is -1.9%So, my understanding is that the TourX tires and wheels are as follows:
Tires: Continental ProContact, Grand Touring A/S, 235/50R18 97V
Ideal rim width:7.5"
Overall Diameter: 27.3", 762 revs per mile
Max load: 1,609 lbs
Wheels: 5x115mm bolt pattern, 8Jx18, ET40, 70.2mm bore.
I have stock 19" rims on my Mazda6 and love the look and road feel of them with 225/45R19 Firestone Firehawk Indy 500 UHP Summer Tires.
When my Conti's fade away I want to get a 19" summer tire/wheel package and use the stock rims for winter rubber.
First off, it's a real P.I.T.A. finding 19" rims with 5x115 pattern and 40mm-ish offset.
Any wheel recommendations?
Then, I'm not going to find the exact outer diameter for a 19" tire...
Should I go down to 26.7" (245/40R19) or up to 27.7" (245/45R19)?
245/45/19 is +1.6%
Not sure if 255 is too wide for you - but @LJ did put 255/45/18 on his stock wheels
closest match for circumference on a 19 is either:
235/45/19 is +0.3%
255/40/19 is -0.8% - but you may want to consider a 8.5-9” width on the wheel.
265/40/19 would also work - but clearance would be an issue.
I also haven’t found many 19” wheels that fit and I would want to install. I even looked at orphaned front wheels from Cadillac ATS (ran optional staggered 19’s, but fronts from that pair should work) and even from the old Cadillac DTS (much harder to find 19’s - and offset is iffy) as bolt pattern and and centerbore do match.
Looks like it’s plastidip for now