BMW i
Forum for the BMW i3, i4 and i8
BMW i3 BMW i8
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

  BMW i Forums > BMW i8 Forums > BMW i8 General Discussion

Post Reply
 
Thread Tools Search this Thread
      03-26-2020, 12:57 AM   #1
i8beemz
New Member
0
Rep
9
Posts

Drives: bmw i8
Join Date: Aug 2019
Location: west coast

iTrader: (0)

Best tire option for i8?

So far I've seen people using mainly Michelin Pilot Sport 4s and Pirelli P Zeros.

Which tires have been lasting you the longest while providing a great ride? I need something that can handle turns on canyon roads with ease. I drive in Southern California weather 90% of the time so snow isn't an issue.

I'm also debating on getting wider tires. I've seen a lot of you guys getting 245/40R20 and 275/35R20. Someone pointed out that wider tires could be an issue for the aerodynamics though. Have you guys experienced many cons with wider tires?

I also saw someone opt for 245/40/20 front and 255/40/20 rear which looked like a good combo too.
Appreciate 0
      03-26-2020, 07:27 AM   #2
Nachbar
Lieutenant
Nachbar's Avatar
Switzerland
497
Rep
492
Posts

Drives: i8
Join Date: Jul 2015
Location: Switzerland

iTrader: (0)

Wider tyres on stock rims look (belly) ugly.
Appreciate 0
      03-26-2020, 09:47 AM   #3
Coastal i8
Private First Class
United_States
61
Rep
152
Posts

Drives: 2015 Crystal White Giga World
Join Date: Jul 2017
Location: Oregon

iTrader: (0)

Garage List
Quote:
Originally Posted by Nachbar View Post
Wider tyres on stock rims look (belly) ugly.
Well.... that’s one opinion.
I installed Bridgestone 245’s and 275’s on the stock rims and I think the car looks much better and handles way better. The original skinny tire sizes in my opinion look dumb on the car.
I have absolutely no clearance issues.
As far as aerodynamics or increased rolling resistance affecting your gas mileage, for me it’s not measurable in normal driving.
Appreciate 1
JasH553.00

      03-26-2020, 11:18 AM   #4
rastaman777
First Lieutenant
United_States
50
Rep
351
Posts

Drives: 2019-x5, 2016-i8, 2019-740i
Join Date: Sep 2015
Location: NY

iTrader: (0)

Quote:
Originally Posted by Coastal i8 View Post
Quote:
Originally Posted by Nachbar View Post
Wider tyres on stock rims look (belly) ugly.
Well.... that's one opinion.
I installed Bridgestone 245's and 275's on the stock rims and I think the car looks much better and handles way better. The original skinny tire sizes in my opinion look dumb on the car.
I have absolutely no clearance issues.
As far as aerodynamics or increased rolling resistance affecting your gas mileage, for me it's not measurable in normal driving.
Quote:
Originally Posted by Coastal i8 View Post
Quote:
Originally Posted by Nachbar View Post
Wider tyres on stock rims look (belly) ugly.
Well.... that's one opinion.
I installed Bridgestone 245's and 275's on the stock rims and I think the car looks much better and handles way better. The original skinny tire sizes in my opinion look dumb on the car.
I have absolutely no clearance issues.
As far as aerodynamics or increased rolling resistance affecting your gas mileage, for me it's not measurable in normal driving.
I don't like the skinny tire look either.
My only hesitation to changing the tires is for aerodynamics/handling.
Is occasionally but regularly going 140-150mph considered normal driving ?
I'm sure it can't be a big deal not using stock tires.
Appreciate 0
      03-26-2020, 01:31 PM   #5
Birdland
Enlisted Member
Birdland's Avatar
Norway
5
Rep
46
Posts

Drives: i8 Roadster Doninton Grey
Join Date: Nov 2019
Location: Norway

iTrader: (0)

In my corner of the wold(Europe) it’s simply not legal to use tyres with different dimensions than is stated in the COC. In Norway we have to pay additional tax when opting for wider/bigger wheels as the Co2 emission increase and our tax system is based on the cars co2.
Appreciate 0
      03-26-2020, 05:48 PM   #6
patsgarageonline
patsgarageonline.com
United_States
54
Rep
127
Posts

Drives: BMW i8
Join Date: Feb 2019
Location: Eldersburg, MD

iTrader: (0)

I'm running 30mm wider (and 5% lower profile) all the way around. I chose an all season tire for better traction in all weather conditions, since I daily drive my i8. I did a review of these tires after 10k miles and compared them to the original tires which also had 10k miles on them.

__________________
I daily drive my BMW i8 and enjoy doing my own service. If you're interested, please follow along on my journey to maintain and improve my i8. http://patsgarageonline.com
Appreciate 0
      03-28-2020, 12:43 PM   #7
MGRMLN
Enlisted Member
3
Rep
47
Posts

Drives: 2015 Nissan GT-R Black Edition
Join Date: Nov 2009
Location: Atlanta, GA

iTrader: (0)

I also run all seasons on my i8 since it's my daily driver throughout the year. I run a 245 square setup, Bridgestone RE980AS that totally eliminates the skinny front tire induced UNDERSTEER but doesn't introduce the additional friction drag of 275's at the rear. No rubbing issues at all.

I did swap my factory lug bolts with titanium ones that helped lower unsprung mass.
__________________
2015 Protonic Blue BMW i8 Pure Impulse Edition
2015 Black Nissan GT-R Black Edition
2019 Carrara White Porsche Cayenne
Appreciate 0
      03-29-2020, 11:47 AM   #8
ken997
New Member
2
Rep
9
Posts

Drives: bmw i8
Join Date: May 2019
Location: Dublin

iTrader: (0)

Quote:
Originally Posted by Coastal i8 View Post
Well.... thatís one opinion.
I installed Bridgestone 245ís and 275ís on the stock rims and I think the car looks much better and handles way better. The original skinny tire sizes in my opinion look dumb on the car.
I have absolutely no clearance issues.
As far as aerodynamics or increased rolling resistance affecting your gas mileage, for me itís not measurable in normal driving.
Can you please give us the full size of the new tires..are they
245/40x20 and 275/35x20? Thank you.
Appreciate 0
      03-29-2020, 11:53 AM   #9
stressdoc
Moderator
stressdoc's Avatar
Dominica
464
Rep
10,653
Posts

Drives: BMW i8; Toy 4runner TRD pro
Join Date: Jun 2005
Location: Waco TX

iTrader: (0)

Quote:
Originally Posted by MGRMLN View Post
I also run all seasons on my i8 since it's my daily driver throughout the year. I run a 245 square setup, Bridgestone RE980AS that totally eliminates the skinny front tire induced UNDERSTEER but doesn't introduce the additional friction drag of 275's at the rear. No rubbing issues at all.

I did swap my factory lug bolts with titanium ones that helped lower unsprung mass.
Where did you get your lug bolts? Acer? Do you know specs offhand? Surprised BMW did not put titanium bolts on i8.

Thanks, I am an unsprung weight reduction junkie...

And if anyone knows a source to get the stock all black 516 rims I would be most thankful. Or BBS FI-R.

My recommendation is Michelin Pilot sport 4S, unless a) you want stock size, or b) live in NW or other rainy place; in which cases I suggest the Pirelli P-Zero.

My choice for now is Michelin PS 4S 20 235/40 and 265/35
Appreciate 0
      04-01-2020, 09:48 PM   #10
MGRMLN
Enlisted Member
3
Rep
47
Posts

Drives: 2015 Nissan GT-R Black Edition
Join Date: Nov 2009
Location: Atlanta, GA

iTrader: (0)

Quote:
Originally Posted by stressdoc View Post
Where did you get your lug bolts? Acer? Do you know specs offhand? Surprised BMW did not put titanium bolts on i8.

Thanks, I am an unsprung weight reduction junkie...

And if anyone knows a source to get the stock all black 516 rims I would be most thankful. Or BBS FI-R.

My recommendation is Michelin Pilot sport 4S, unless a) you want stock size, or b) live in NW or other rainy place; in which cases I suggest the Pirelli P-Zero.

My choice for now is Michelin PS 4S 20 235/40 and 265/35
Yes. Acer.
Bought them here:

https://smile.amazon.com/gp/product/...3400_397493790
__________________
2015 Protonic Blue BMW i8 Pure Impulse Edition
2015 Black Nissan GT-R Black Edition
2019 Carrara White Porsche Cayenne
Appreciate 0
      04-02-2020, 10:10 AM   #11
Coastal i8
Private First Class
United_States
61
Rep
152
Posts

Drives: 2015 Crystal White Giga World
Join Date: Jul 2017
Location: Oregon

iTrader: (0)

Garage List
Quote:
Originally Posted by ken997 View Post
Can you please give us the full size of the new tires..are they
245/40x20 and 275/35x20? Thank you.
Yes. 245/40X20 and 275/35X20
They fit just fine on the stock wheels with no clearance issues.
Adds 30mm in width with the tire diameter and sidewall dimensions remaining almost identical to the original BMW tire choice.
Appreciate 0
      04-02-2020, 10:22 AM   #12
Coastal i8
Private First Class
United_States
61
Rep
152
Posts

Drives: 2015 Crystal White Giga World
Join Date: Jul 2017
Location: Oregon

iTrader: (0)

Garage List
Quote:
Originally Posted by rastaman777 View Post
I don't like the skinny tire look either.
My only hesitation to changing the tires is for aerodynamics/handling.
Is occasionally but regularly going 140-150mph considered normal driving ?
I'm sure it can't be a big deal not using stock tires.
Well...
I’m not sure that’s normal driving or responsable driving but the speed ratings on the tires are the same as the original tires and with proper tire pressure I can’t see a problem.
Appreciate 0
      04-03-2020, 10:15 AM   #13
stressdoc
Moderator
stressdoc's Avatar
Dominica
464
Rep
10,653
Posts

Drives: BMW i8; Toy 4runner TRD pro
Join Date: Jun 2005
Location: Waco TX

iTrader: (0)

Quote:
Originally Posted by MGRMLN View Post
Thanks! $309 for black... diets can be $$$. Cheaper than a set of BBS FI-R though. And a good way to offset increased weight from wider tires.
Appreciate 0
      04-04-2020, 09:25 PM   #14
MGRMLN
Enlisted Member
3
Rep
47
Posts

Drives: 2015 Nissan GT-R Black Edition
Join Date: Nov 2009
Location: Atlanta, GA

iTrader: (0)

Quote:
Originally Posted by stressdoc View Post
Thanks! $309 for black... diets can be $$$. Cheaper than a set of BBS FI-R though. And a good way to offset increased weight from wider tires.
Yes! That's exactly why I got them. I'm running 245 square setup with 3mm spacers so I wanted to offset the gains. I think the combo is still lighter than box stock.
__________________
2015 Protonic Blue BMW i8 Pure Impulse Edition
2015 Black Nissan GT-R Black Edition
2019 Carrara White Porsche Cayenne
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:09 AM.




bmw
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST