I just got two 17x8 and two 17x9 wheels all with 43 offset. I was wondering if they are going to fit my FD and clear the fenders. I believe the suspension is stock. and what tire sizes should i use? I would like them to show accurate speedo meter reading. Thanks!

 

Wrong section

 

Looking at the tire chart your going to be off on the off set. 31 offset would be ideal with the tire sizes shown

17x8 front 17X9 rear
Tire width (mm) 225 255
Aspect ratio 45 35
Tire diameter (in.) 24.97 24.02
Actual speed (60 mph indicated) 60 58
Front wheel offset (mm) 31 44
Tire clearance, outside (in.) 0.22 0.23
Tire clearance, inside (in.) 1.78 0.77
Rear wheel offset (mm) 19 31
Tire clearance, outside (in.) 0.24 0.22
Tire clearance, inside (in.) 2.26 1.28

 

Looking at the tire chart your going to be off on the off set. 31 offset would be ideal with the tire sizes shown

17x8 front 17X9 rear
Tire width (mm) 225 255
Aspect ratio 45 35
Tire diameter (in.) 24.97 24.02
Actual speed (60 mph indicated) 60 58
Front wheel offset (mm) 31 44
Tire clearance, outside (in.) 0.22 0.23
Tire clearance, inside (in.) 1.78 0.77
Rear wheel offset (mm) 19 31
Tire clearance, outside (in.) 0.24 0.22
Tire clearance, inside (in.) 2.26 1.28

 

damn double post and the spacing I had between the two ran together you'll have to look at it closely to seperate the front and rear numbers.

 

CantGoStraight: Sorry man, but your info is just plain wrong.

Yes, +43 is a good offset for those wheel sizes. Proper tire sizing would be 225/45 and 255/40 17.

An alternative tire sizing would be 235/45 and 265/40. This combo will be ~0.4" taller than stock. This is a very common sizing though and results in only a small speedo error. The slightly taller tire up front will have more of a chance of hitting the fender liner on dips. You do put down a total of 40mm more rubber on the road though.

 

Hmmmmmmmm where did I go wrong ??? I went to the wheel/suspension forum and downloaded the excel spread sheet and then looked at his wheel size and width. then copied and pasted what was in the form. ???

 

31 offset would not be the ideal, the 44 would be ideal.
43 should be fine as rynberg has stated.
I ran 40 offset all the way around, with 265's in the back and 235's up front. I had only miner fender liner rubbing.

 

Couldn't you also run a 245/40 on the front? It will have a slightly smaller diameter than stock (.14"), which I think is a better situation than a taller tire. I have been running 245/40 F 255/40 R for a little while now with no problems. BTW, I have 17x8 F 17x9 R.

 

I have problems with the accuracy of that spreadsheet for some of the parameters...in any case +31 offset would be the absolute MINIMUM offset for an 8" wheel -- and would most likely rip the fender lips down within 5 minutes of driving.

+50 offset is ALWAYS the ideal offset for any proper width wheels. Since few wheels are made in this offset, we have acceptable minimums....+40 should be considered a practical minimum for 8-8.5" wheels up front. +45 should be considered a practical minimum for 9" wheels up front, although quite a few get away with +43 without too many issues.

245/40 is a bit too wide for a 17x8 wheel if you are concerned about maximum handling ability and feel.

 

I see, are things different for 16x8 wheels? Since pretty much everybody recommends 245/45 for the stockers.

 

As you go lower in profile, the tire needs a wider wheel to properly support the sidewall. You can safely mount a 245/40 on a 17x8 wheel, but the sidewall will not be optimally supported.

 

LOL! I'm glad someone caught this.. I also say 31 isn't going to work with 17x9s.. maybe with 17x8 in the rear.. but not ideal.

99+ FD's have 17x8 front and 17x8.5 rear. Fronts are i believe 50 offset with 235/45/17 tires.. Rears, damn, cant remember exact size.

 

Thanks Rynberg, I was trying to help the guy out (thought I was reading the spread sheet correctly) but just don't know enough about wheels and tires to know if the spread sheet is accurate. Jack

 

I interpret the offset in Jimlab's spreedsheet different. I thought that the offset that is listed is the lowest that you can go before the calculations say that the tire would start hit the fender lip. So anything higher becomes safer.