New Wheels - Help Needed Please
#21
This diameter is for the OEM 16" (225/60) and the 18" (245/45 and 275/40).
The often used 255/40R18 is slightly smaller in diameter.
#22
#27
#28
Cheers
#29
Do you happen to know that is the may inner clearance reduction you can go for rear and front wheels ?
Cheers
#31
9J with an ET35 will fit at all 4 corners.
Forum member Stu got 9J all around.
But I don't think you can go any wider than 245/45 or 255/40 in the front due to scraping (as specified earlier), and my own personal opinion is that 9J is too wide for 255 tires, they will protrude inwards.
Forum member Stu got 9J all around.
But I don't think you can go any wider than 245/45 or 255/40 in the front due to scraping (as specified earlier), and my own personal opinion is that 9J is too wide for 255 tires, they will protrude inwards.
thanxs for your help
#32
I have personally run 15mm less inner clearance and 28mm less outer clearance (front) with no problems.
One the rear I run 17mm less inner clearance without issue. My rear wheels extend 33mm more outwards but you need fender lip trimming/rolling.
Previous setup: OEM Milan wheels (which I am selling)
18x9 et35 255/40/18 front
18x9 et35 264/40/18 rear.
No rubbing. I even temporarily had to run the 265/40 rears on the front and there were no issues.
Current setup:
18x9 et18 255/40/18 front
18x10 et25 295/35/18 rear
No issues on the front. Need fender trimming/rolling on rears.
I don't agree with ericjansen regarding 255 on 9" wheel. 255 is the perfect width for a 9" wide wheel. There is no bulge or stretch. In fact that is the recommended width by the manufacturers. Even 10" is ok. An 8'' wheel is too narrow for a 255 tire.
One the rear I run 17mm less inner clearance without issue. My rear wheels extend 33mm more outwards but you need fender lip trimming/rolling.
Previous setup: OEM Milan wheels (which I am selling)
18x9 et35 255/40/18 front
18x9 et35 264/40/18 rear.
No rubbing. I even temporarily had to run the 265/40 rears on the front and there were no issues.
Current setup:
18x9 et18 255/40/18 front
18x10 et25 295/35/18 rear
No issues on the front. Need fender trimming/rolling on rears.
I don't agree with ericjansen regarding 255 on 9" wheel. 255 is the perfect width for a 9" wide wheel. There is no bulge or stretch. In fact that is the recommended width by the manufacturers. Even 10" is ok. An 8'' wheel is too narrow for a 255 tire.
Last edited by SteveM; 02-16-2017 at 11:19 AM.
The following users liked this post:
Benson7 (02-16-2017)
#33
I have personally run 15mm less inner clearance and 28mm less outer clearance (front) with no problems.
One the rear I run 17mm less inner clearance without issue. My rear wheels extend 33mm more outwards but you need fender lip trimming/rolling.
Previous setup: OEM Milan wheels (which I am selling)
18x9 et35 255/40/18 front
18x9 et35 264/40/18 rear.
No rubbing. I even temporarily had to run the 265/40 rears on the front and there were no issues.
Current setup:
18x9 et18 255/40/18 front
18x10 et25 295/35/18 rear
No issues on the front. Need fender trimming/rolling on rears.
I don't agree with ericjansen regarding 255 on 9" wheel. 255 is the perfect width for a 9" wide wheel. There is no bulge or stretch. In fact that is the recommended width by the manufacturers. Even 10" is ok. An 8'' wheel is too narrow for a 255 tire.
One the rear I run 17mm less inner clearance without issue. My rear wheels extend 33mm more outwards but you need fender lip trimming/rolling.
Previous setup: OEM Milan wheels (which I am selling)
18x9 et35 255/40/18 front
18x9 et35 264/40/18 rear.
No rubbing. I even temporarily had to run the 265/40 rears on the front and there were no issues.
Current setup:
18x9 et18 255/40/18 front
18x10 et25 295/35/18 rear
No issues on the front. Need fender trimming/rolling on rears.
I don't agree with ericjansen regarding 255 on 9" wheel. 255 is the perfect width for a 9" wide wheel. There is no bulge or stretch. In fact that is the recommended width by the manufacturers. Even 10" is ok. An 8'' wheel is too narrow for a 255 tire.
Jesus Christ...This is the information I have been looking for ages...Fantastic !!!! You made my day
#34
#35
You will need a hubcentric spacer from 74.1mm to 83mm, I couldn't find any online when I looked for that size a while back so you would probably need to take the ones that were 71mm ish ID 83 OD and machine the middle out to the right size. Other than that it should fit, but 18.5 might be a hard dia to find tires for...
#37
The tires im putting on are 255/40/18
The tires on there now are 225/60/16.
By my math, when installed, there should only be a wheel height difference of approx 18mm.
Since the wheel will be taller, but the sidewall is shorter.
Right now I have a lot of clearance in the tubs. They should fit, but if not, then a spacer will do.
Thanks for the replys
#39
Yes, typo.
The tires im putting on are 255/40/18
The tires on there now are 225/60/16.
By my math, when installed, there should only be a wheel height difference of approx 18mm.
Since the wheel will be taller, but the sidewall is shorter.
Right now I have a lot of clearance in the tubs. They should fit, but if not, then a spacer will do.
Thanks for the replys
The tires im putting on are 255/40/18
The tires on there now are 225/60/16.
By my math, when installed, there should only be a wheel height difference of approx 18mm.
Since the wheel will be taller, but the sidewall is shorter.
Right now I have a lot of clearance in the tubs. They should fit, but if not, then a spacer will do.
Thanks for the replys
This is great
Just checked mine.
it seems that going from a 225/60/R16 to a 255/40R18, the circumference is actually slightly smaller that stock.
It's @ 2.25% of stock.
Within the 3% tolerance.
Try this:
Tire Size Calculator - Tire & Wheel Plus Sizing
#40
You will use wider tires and wider trims, AND you will use a smaller ET (from 33 to 20), which will push the tire even further out.
Your tire will normally retract into the wheel well if ~3/4 or more suspended, and a wider tire WILL at some point hit the fender if you go too wide.
In your case the tire will be almost 3cm wider.
You will be on the very limit if you will clear the lip, probably JUST, with the thickness of credit card between the tire and lip.
And use this calculator, much more complete, not only giving you the changes in tire and rim, but also the surroundings:
https://www.wheel-size.com/calc/?whe...=30mm&scl=50mm