Upgrade Tyres on 530i
06-12-2009, 07:01 AM
#1
Members
Thread Starter
Join Date: Sep 2006
Location: London, UK
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
Hello,
I currently have the 18" Individual rims on my 530i with Sport Suspension.
The current Tyres are size 245/40 R18 (Goodyear F1 GSD3 Run Flat, I think)
I want to put wider with tyres - 275 or 285. Can I do that on the same rims or I will need to change the rims. Is there a maximum size with I can go to and if yes how do I find out?
I also want to go with non Run Flat this time since I believe they are better for performance and cost.
Thanks for your advice / suggestions.
ASenna04
I currently have the 18" Individual rims on my 530i with Sport Suspension.
The current Tyres are size 245/40 R18 (Goodyear F1 GSD3 Run Flat, I think)
I want to put wider with tyres - 275 or 285. Can I do that on the same rims or I will need to change the rims. Is there a maximum size with I can go to and if yes how do I find out?
I also want to go with non Run Flat this time since I believe they are better for performance and cost.
Thanks for your advice / suggestions.
ASenna04
06-12-2009, 07:22 AM
#2
Senior Members
Join Date: Jan 2008
Location: Denva, CO Baby
Posts: 1,099
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2005 545i /w Sport pkg - SMG - Nav - Premium pkg - PDC - Ready to begin my modding! =)
Originally Posted by ASenna04' post='909120' date='Jun 12 2009, 09:01 AM
Hello,
I currently have the 18" Individual rims on my 530i with Sport Suspension.
The current Tyres are size 245/40 R18 (Goodyear F1 GSD3 Run Flat, I think)
I want to put wider with tyres - 275 or 285. Can I do that on the same rims or I will need to change the rims. Is there a maximum size with I can go to and if yes how do I find out?
I also want to go with non Run Flat this time since I believe they are better for performance and cost.
Thanks for your advice / suggestions.
ASenna04
I currently have the 18" Individual rims on my 530i with Sport Suspension.
The current Tyres are size 245/40 R18 (Goodyear F1 GSD3 Run Flat, I think)
I want to put wider with tyres - 275 or 285. Can I do that on the same rims or I will need to change the rims. Is there a maximum size with I can go to and if yes how do I find out?
I also want to go with non Run Flat this time since I believe they are better for performance and cost.
Thanks for your advice / suggestions.
ASenna04
I dont see why you cant go as wide as 275/285, you probably will have to go down to a lower aspect ratio however, probably a 35 series.
1010tires.com has a tire calculator so you can figure things like that out....
GL
06-12-2009, 07:29 AM
#3
Contributors
Join Date: Dec 2007
Location: St. Louis Burbs, USA
Posts: 8,998
Likes: 0
Received 1 Like
on
1 Post
My Ride: 2007 530i. Purchased 6/28/07. Titanium Silver Metallic, Black Dakota Leather, Dark Poplar Trim, Steptronic, Premium Package, Cold Weather Package, Bluetooth, Adaptive Control Xenons. 10/30/07 Added OEM 124s with 245/40/18 & 275/35/18 Michelin Pilot Sport A/S tires. Installed red Cal Covers� from BavAuto. 11/21/07 Added OEM all-weather floor mats (for winter, carpet in summer) and coat rack. 6/26/08 installed M5-style rear spoiler. 6/30/08 put on red reflectors. 8/22/08 Euro turn signal stickers applied. 3/20/09 Installed Shadowline Trim. 3/27/09 Added Matte Black Kidney Grilles from Trinity. 4/03/09 Installed Bimmian Shadow Matte Black 530i Badges. 4/04/09 Installed LED license plate lights from Trinity. 5/01/09 Installed Brabus Interior LED Kit and White Angel Eyes. 5/02/09 Put in Brabus 6K Fogs. 5/14/09 Removed charcoal filter. 5/15/09 Installed light smoke LED side marker lamps from Trinity. 5/21/09 Sprint Booster. 6/12/09 Painted exhaust tips flat black. 6/13/09 Pulled red Cal Covers and painted calipers low gloss black. 6/27/09 RPI Ram Air Scoop from Trinity. 8/15/09 Installed Brabus's silver invisibulbs front and rear. 9/24/09 Installed R-Dash license plate LEDs from Brabaus (John).
What width are the rims?
06-12-2009, 08:25 AM
#4
Members
Thread Starter
Join Date: Sep 2006
Location: London, UK
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by CWS530' post='909165' date='Jun 12 2009, 11:29 AM
What width are the rims?
8JX18 ET:20
So:
Wheel Size: 8x18
Offset: 20
Not sure what the offset is.
Also, the advantage are:
1. Better look
2. Better grip
Are there any disadvantages?
Thanks,
ASenna04
06-12-2009, 08:58 AM
#5
Senior Members
Join Date: Jan 2008
Location: Denva, CO Baby
Posts: 1,099
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 2005 545i /w Sport pkg - SMG - Nav - Premium pkg - PDC - Ready to begin my modding! =)
Originally Posted by ASenna04' post='909235' date='Jun 12 2009, 10:25 AM
I understand the Rims are:
8JX18 ET:20
So:
Wheel Size: 8x18
Offset: 20
Not sure what the offset is.
Also, the advantage are:
1. Better look
2. Better grip
Are there any disadvantages?
Thanks,
ASenna04
8JX18 ET:20
So:
Wheel Size: 8x18
Offset: 20
Not sure what the offset is.
Also, the advantage are:
1. Better look
2. Better grip
Are there any disadvantages?
Thanks,
ASenna04
Well with an 8" rim you could probably go as wide as 255/40, but not much wider then that. I would check some prices on that size tire, then verify with the manufacture if an 8" rim would be in spec for that tire.
06-12-2009, 09:12 AM
#6
Members
Thread Starter
Join Date: Sep 2006
Location: London, UK
Posts: 75
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by IceyTys' post='909282' date='Jun 12 2009, 12:58 PM
Well with an 8" rim you could probably go as wide as 255/40, but not much wider then that. I would check some prices on that size tire, then verify with the manufacture if an 8" rim would be in spec for that tire.
06-12-2009, 01:51 PM
#7
Contributors
Join Date: Sep 2008
Location: Los Angeles
Posts: 728
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: 05 530i
87 325is
85 VW GTI
A 275 tire would probably look goofy. They will bulge out past the rims. I'd just go with a stickier compound.
http://www.discounttiredirect.com/direct/s...alse&cs=255
http://www.discounttiredirect.com/direct/s...alse&cs=245
http://www.discounttiredirect.com/direct/s...alse&cs=255
http://www.discounttiredirect.com/direct/s...alse&cs=245
06-12-2009, 06:30 PM
#8
Contributors
Join Date: Dec 2007
Location: St. Louis Burbs, USA
Posts: 8,998
Likes: 0
Received 1 Like
on
1 Post
My Ride: 2007 530i. Purchased 6/28/07. Titanium Silver Metallic, Black Dakota Leather, Dark Poplar Trim, Steptronic, Premium Package, Cold Weather Package, Bluetooth, Adaptive Control Xenons. 10/30/07 Added OEM 124s with 245/40/18 & 275/35/18 Michelin Pilot Sport A/S tires. Installed red Cal Covers� from BavAuto. 11/21/07 Added OEM all-weather floor mats (for winter, carpet in summer) and coat rack. 6/26/08 installed M5-style rear spoiler. 6/30/08 put on red reflectors. 8/22/08 Euro turn signal stickers applied. 3/20/09 Installed Shadowline Trim. 3/27/09 Added Matte Black Kidney Grilles from Trinity. 4/03/09 Installed Bimmian Shadow Matte Black 530i Badges. 4/04/09 Installed LED license plate lights from Trinity. 5/01/09 Installed Brabus Interior LED Kit and White Angel Eyes. 5/02/09 Put in Brabus 6K Fogs. 5/14/09 Removed charcoal filter. 5/15/09 Installed light smoke LED side marker lamps from Trinity. 5/21/09 Sprint Booster. 6/12/09 Painted exhaust tips flat black. 6/13/09 Pulled red Cal Covers and painted calipers low gloss black. 6/27/09 RPI Ram Air Scoop from Trinity. 8/15/09 Installed Brabus's silver invisibulbs front and rear. 9/24/09 Installed R-Dash license plate LEDs from Brabaus (John).
On 8" rims, I would say max 255. You could put those in the back, but don't go wider than 245 in the front. For ten centimeters, I'm not sure it's worth it. At least if you are square all around, you can rotate. If you want 275s, you'll need wider rear wheels.
Wider pros: Look more aggressive, bigger contact patch/better grip, less wheelspin on launch (esp. from a dig)
Wider cons: Decreased gas mileage (negligible), tendency to understeer, cost more
Wider pros: Look more aggressive, bigger contact patch/better grip, less wheelspin on launch (esp. from a dig)
Wider cons: Decreased gas mileage (negligible), tendency to understeer, cost more
06-14-2009, 07:19 AM
#9
YOu cannot put 255 on your 8 inch wheels. I had the same ones and 245s already bulge quite a bit and remember bmw pics things for a reason. The bulge of a tire effects how it corners, handles etc so you want to stay reasonably in proportion so that if you go up sizes you need larger rims to accomodate and maintain a similar "bulge" if you willl. You need new wheels if you want fatter tires.
I got 8.5 fronts and 9.5 rears, that will allow you to do 275s in the back and keep 245s up front. You could also do 8 front and 9 rear with the same 245/275, which is what bmw uses in their 124 wheels. I personally think 245s look better on 8.5, the bulge slightly less and look just right.
I got 8.5 fronts and 9.5 rears, that will allow you to do 275s in the back and keep 245s up front. You could also do 8 front and 9 rear with the same 245/275, which is what bmw uses in their 124 wheels. I personally think 245s look better on 8.5, the bulge slightly less and look just right.
Thread
Thread Starter
Forum
Replies
Last Post