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      07-18-2019, 04:48 PM   #1
TopJimmy
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Drives: BMW M3 F80
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F80 M3 fits perfect with BBS CI-R 9.5/10.5 and Conti 275/35R19 + 295/30R19 F/R

I wanted to let you guys know a setup that went very well, and also to give a thumbs-up to Tire Rack for their help.
Also another thumbs up to Tommy L Garage for his Mud Flaps (stone guards) and advice on Lift Puck Adapters.

They fit PERFECT, no rub, no spacers, no alignment (stock camber).
One spot up front is less than a finger tight with the rim angled at 10 and 2 o'clock.
I gave the suspension a hard street workout and it's all good.
Traction improved a good bit, and handling/drivability maintained.
See below for Before Pix and for my Logic. I hopes this helps other members!
-TopJimmy

After Pix:
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Last edited by TopJimmy; 07-18-2019 at 05:04 PM.. Reason: text adds
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      07-18-2019, 04:50 PM   #2
TopJimmy
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Before:
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Last edited by TopJimmy; 07-18-2019 at 04:56 PM.. Reason: text edit, pix adds
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      07-18-2019, 04:50 PM   #3
TopJimmy
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The Thinking:

I got a good deal on an Alpine White 2018 1-owner Base model F80 with MT6 trans.
I decided that the following upgrades were necessary to increase grip and reduce sway for "serious street" use:

1) Get the widest tires possible without requiring body modifications, while still allowing future suspension upgrades. This is my daily-driver so I need to stick with 19-inch wheels to survive potholes of the Northeast. My Bimmerpost and other web-research says the maximum 19-inch setup I can fit on the fronts (with stock suspension) are 285/35ZR19 on 10-inch wheels, and rears with 305/30ZR19 on 11-inch wheels. Since this was maximums reported on the internet I had doubts.
2) Depending on the new tires and their grip maybe still add a Dinan Sway-Bar Kit.
3) Save as much money as possible for an upcoming upgrade with ESS Catted DP + AA Mid + Dinan Rear Exhaust + Dinan Stage 2 (maybe Stage 3 if any money is left).


Here's my tire and wheel research at Tire Rack:
===========
===TIRES===
===========
==*Stock*== Continental ContiSportContact 5P == "BMW Star" (factory tires) ==
--*Front*-- 255/35ZR19, 10/32 tread, 24lbs, 8.5-10in rim, 9in rim meas, 10.2in section, 8.6in tread, 26in dia, 799RPM
--*Rears*-- 275/35ZR19, 9/32 tread, 29lbs, 9-11in rim, 9.5 rim meas, 10.9in section, 9.9in tread, 26.6in dia, 781RPM
== Other == Conti 5Ps, just not BMW Star factory sizes
-- Front -- 265/35ZR19, 9/32 tread, 26lbs, 9-10in rim, 9.5in rim meas, 10.7in section, 9.6in tread, 26.3in dia, 790RPM
-- Rears -- 295/30ZR19, 9/32 tread, 26lbs, 10-11in rim, 10.5in rim meas, 12.2in section, 10.8in tread, 26in dia, 799RPM

== Other == Michelin Pilot Sport 4S (PS4S)
-- Front -- 255/35ZR19, 9.5/32 tread, 25lbs, 8.5-10in rim, 9in rim meas, 10.2in section, 9in tread, 26in dia, 799RPM
-- Front -- 265/35ZR19, 9.5/32 tread, 27lbs, 9-10.5in rim, 9.5in rim meas, 10.7in section, 9.6in tread, 26.3in dia, 790RPM
-- Fr?Rr -- 275/35ZR19, 9.5/32 tread, 27lbs, 9-11in rim, 9.5in rim meas, 10.9in section, 9.8in tread, 26.6in dia, 783RPM
-- Rears -- 285/35ZR19, 9.5/32 tread, 28lbs, 9.5-11in rim, 10in rim meas, 11.4in section, 10in tread, 26.9in dia, 774RPM
-- Rears -- 295/30ZR19, 9.5/32 tread, 29lbs, 10-11in rim, 10.5in rim meas, 11.9in section, 11in tread, 26in dia, 799RPM
-- Rears -- 305/30ZR19, 9.5/32 tread, 29lbs, 10.5-11.5in rim, 11in rim meas, 12.3in section, 11.5in tread, 26.3in dia, 792RPM
-- Rears -- A 325 is available but unusable with its' 13in section width.

============
===WHEELS===
============
==*Stock*== BMW 437M silver 19in (5-tuning fork)
--*Front*-- 9in wide ET29 with 5x120 lug pattern, and Conical Seat 14x1.25x27mm black lug bolts (27mm threaded shank, not overall)
--*Rears*-- 10in wide ET40 with 5x120 lug pattern, and Conical Seat 14x1.25x27mm black lug bolts
== Other == BBS CI-R Matte Black with Silver Rim (5-antler), and looks just like the FI-R to me (except cutouts and $4K more)
-- Front -- 9.5in wide ET25 with 5x120 lug pattern, and 60-degree Seat 14x1.25x33mm silver lug bolts (33mm threaded shank, not overall)
--*Rears*-- 10.5in wide ET35 with 5x120 lug pattern, and 60-degree Seat 14x1.25x33mm silver lug bolts


Here's my decision:
- Take the stock rear 275/35ZR19 Conti 5Ps up to the front on new BBS CI-R 9.5in wheels. The 275s are already there so they're basically free, and they have 95% tread since the dealer replaced them just before my BMW Cert Pre-Owned purchase. That's $700-800 saved for Dinan later.
- I wanted 305s on the rear but the Conti 295s have a section width of 12.2 and height of 26in, just a smidge more narrow/shorter than the P4SS 305 at 12.3 section and 26.3in height. The P4SS 305 has a wider tread but the Conti 295 lets me try the fit with a little safety buffer. I also like how the Contis handle in the heavy rain so far, so I went with Conti 295s out back, and pre-mounted and balanced on the BBS CI-R 10.5in at Tire Rack (whole order of 4 rims and 2 tires for $3,466, plus a Wall Rack for $147).
- Bought full set of brand-spankin-new discontinued 255/40R19 Blizzak's (LM-32s???) for $400 cash off Craigslist.
- Shipped the Tire Rack order to my local Tires Plus and hauled the Blizzaks for them to mount/balance 6 tires (4 Blizzaks and the 2 Conti fronts) for $145.


Here's what happened:
- Tire Rack called me because I accidentally ordered extra TPMS and Black Sleeves, so kudos to them for catching that and removing these from my order, plus their refund.
- The guy at Tires Plus said "Are you SURE these will fit? It looks TIGHT." (you know, with that look...)
- I said "My BimmerWeb guys say it fits. Go for it. I'll stand here." (straight eyes) He said "ok..."
- The job went PERFECT. The fit looks custom, but with no spacers, like a hand in a glove. This was a straight bolt-on that you can do yourself if the tires are mounted and balanced.
- The BBS CI-R comes with silver lug bolts to match the rim, but I wanted black and ordered a set of 33mm shank black anodized

10.9 grade off Amazon ($39)
- The Blizzaks fit fine on the factory 9in/10in wheels, and make a perfect winter set.
NOTE: The Blizzaks are directional tires, so I need to keep track of all 4 for Front/Rear and Driver/Passenger side and can not rotate tires without dismounting. The Continentals are not uni-directional, so I can rotate the fronts and the backs Left-to-Right.

Up Next:
I saw a Vorsteiner EVO chin spoiler on sale Amazon Prime Day so that's on the way...but don't tell the wife!
Bimmerpost and co-worker LarryN gave me his cable for free to do some coding. Thanks Larry!!!!!

-TopJimmy

Last edited by TopJimmy; 07-18-2019 at 05:03 PM..
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