Thanks for the chart THX723. A few questions for you to make sure I am reading it properly. On the 8.5 (+45) does this mean the wheel will almost hit the front suspension member? So if I add the tire, I will most definitely rub the suspension if I can get the wheel/tire combo on? On the 8.5(+38) combo it appears that the wheel will be outside the fender and most certainly the wheel/tire combo will be outside the fender? Thanks for the info.

Take care,

amG35
2003 Silver Sedan

 

Yes that is correct!
But ... keep in mind, I did a very rough measure of the inside suspension clearance, so it's not exact. I was conservative with the measurments with that respect (better safe than be sorry). However, I'm almost certain it will rub! So, go w. +38 or lower if you can with 8.5s. 8.5s are not *generally* recommended for the fronts.

THX723

 

<blockquote><font class="small">In reply to:</font><hr>

Yes that is correct!
But ... keep in mind, I did a very rough measure of the inside suspension clearance, so it's not exact. I was conservative with the measurments with that respect (better safe than be sorry). However, I'm almost certain it will rub! So, go w. +38 or lower if you can with 8.5s. 8.5s are not *generally* recommended for the fronts.

<hr></blockquote> I have 8.5's with a 38mm offset(245/35/20) and I have no rubbing issues whatsoever. My suspension is stock. It would be difficult to get a finger in between the sidewall of the tire and the suspension, however, but the tire is almost flush with the inside fender on the outside. I have the same wheel combo all the way around and it works great. If you were lowered or planning on lowering your car, I would say go with a 8'' rim in front, to give yourself some space. A 9" or even 9.5" would fit in the back. Some guys have already done it...BTW great info THX_723. Just about all of it seems very viable..


Ivory Pearl/Premium/Xenon/

 

<blockquote><font class="small">In reply to:</font><hr>

On the 8.5(+38) combo it appears that the wheel will be outside the fender and most certainly the wheel/tire combo will be outside the fender? Thanks for the info.

<hr></blockquote>The 38mm won't be out side the fender, the 45mm would rub on the suspension. I'm assuming this is with a 245 section width tire.


Ivory Pearl/Premium/Xenon/

 

I got a question.
I just got some Gcoupe 18" OEMs to put on my Gsedan. They are sitting on fr: 225/45 & rr: 245/45. Do any of you see this upsetting the VDC and ABS.(and speedo)?

Should I replace the tires? Maybe with 225/45 all the way around?

 

Since Nissan/Infiniti never revealed exactly how the VDC algorithm works, I'm basing this on a general 'stability' implementation.

- ABS will be fine.
- TC will kick in a little later than stock
- VDC 'may' act a little funky when cornering hard.

Only way to know for sure is to drive it hard and see. I'm more incline to think it should be ok. So, let us know how it works out.

THX723

 

I got some good back roads I can test this out in...maybe this weekend.......if this rain will stop to give me a good window :-)

Ive already noticed a difference on the TC kicking in later than stock. Not a bit deal.......actually gives an even harder kick since its rev'd higher.

I'll post my findings as soon as I can

thanks

 

Great looking forward to your report

My guess is you will suffer slightly more 'understeer' as the result. VDC will likely kicking in a bit later for 'push' conditions and vice versa for the 'loose' conidition where it will catch it a bit too soon.

THX723

 

Wow, you know a lot about wheels and tires. I would like to go with the widest tire that fits my stock sport wheels. What would you recommend that also does not alter the speedo too much. I heard that 235/50-17 would be a good choice. And which brand would you recommend for best handling and low noise.
Thanks in advance.

 

Yeah 235/50R17 is just about perfect. In fact, that's what Gurgen's running right now. In all out performance, it's tough to beat Bridgestone S03s and those GoodYear Eagle F1 GS-D3s. Noise? ... heh heh, not something I ever considered a factor in deciding my tire of choice. Perhaps someone else can chime in on this.

THX723

 

Thanks for your reply! You've been really helpful and I don't have to resort to trial and error and wasted dollars if it doesn't work out. These forums are great!

 

On my Sedan, I'll be going w/ 19x8.5 (+35) front & 19x9.5 (+42) rear. I've made some calculations and measurements and it's likely it would work w/o rolling the fender. Currently w/ the 17x7" wheels and the 45 offset, there's about 40mm of gap between the tire and the inner fender for both front and rear, which means w/ 8.5 for the front w/ an offset of 35, there's still 19mm of clearance for the front. As for the rear, at 9.5 w/ 42 offset, there's still 3mm of gap to the fender. In addition, if one wants to go very aggressive (as the Japanese love to do), rolling the fender would give an extra 10mm of space for the rear. There's also the factor of my measurement w/ the stock tire, which has more sidewall sticking out than a 30series tire would, which means there's still about 5-10mm to work w/.

My measurements came about by using a hydraulic jack to jack the front right corner up so that the left rear is tucked in and vice versa to measure the other side. I then take my calculations to a drawing board and layout the stock offset and other measurements.

I'll post here once I get the wheels on.......but of course, I wouldn't bothe rmounting any of the tires before testing them out.......which is what I recommend anyone who wants to go w/ a very aggressive offset to do. Place the wheel onto the studs and hand tighten the lugs, so that there the wheel won't move, but not to overtighten to the point that one could tell the wheel's been placed thru studs. But of course, this must be done w/ the car jacked up. Then, you'll take anothe rjack and raise the entire suspension by jacking at the lower control arm so that you'll be moving the wheel up all the way up to see if the wheel scrapes........

I guess, I'll be one of the few to go w/ these offsets as they are pretty aggressive....but I'll let everyone know how it goes.

Pearl White 2003 Sedan & 2004 Coupe 6MT
Certified Window Tint & Detailing Specialist
Clearshield ("Clearbra") Authorized Dealer
Madico Authorized Dealer
www.machiii.net

 

By the way, on my Coupe, I went w/ 19x8.5 (+11), 19x9.5 (+15) and no rubbing issues even w/ a 2" drop. On my sedan, I have a 1.5" drop..........fingers crossed......pretty sure it'll fit..............pray for me guys....hehe

Pearl White 2003 Sedan & 2004 Coupe 6MT
Certified Window Tint & Detailing Specialist
Clearshield ("Clearbra") Authorized Dealer
Madico Authorized Dealer
www.machiii.net

 

clint,
I'm not sure I'm understanding your fitment chart. Why is the 8" wheel almost twice as wide as the 7"? Thanks in advance for the help.

 

Since it's impractical to fit the entire 7-inch across a piece of paper, I cropp'd 6-inches out of the 7.0" diagram and normalized everything else to it. If it makes it any easier for you, add 6-inches to the middle of any block.

Hope that helps.

THX723