fivelitre

As a guide, I'm running a 10jx18" ET59 Speedline Daytona c/w 265/35/18 Bridgestone S-02 at RS ride height. Geo is a fast road setup and all I needed was a gentle roll of the arch for full compressed clearance.
Your offset is just 4mm more aggressive on a higher suspension setup. Get the car to a garage/workshop that understand suspension geometry and I'm certain they will be able to set the car up and are likely to know someone if the arches need tickling.

C.

Bill Verburg

There are 2 things going on there
1) the old wheel front space was 75mm the new 84.7mm, f/s is bugger due to extra width and different ET, this means that the wheel outer face sits 9.7mm more outboard. The bead moved out the same and thus so did the tire sidewall.

2) the 10 stretches the nominally 265mm tire more than the 9 did. a Pilot SS when mounted on a 9 will measure ~10.5"(267mm) section width, the same tire mouted on a 10 will measure ~10.9"(277mm)

I've run much lower than you guys are w/ 10ET52 and 265/35 x18 w/ more aggressive camber(-1.9) and a bit off a fender roll particularly on the left rear.

RacerX1166

The rub is at the top of the arch on the inside of the lip. And I tend to agree that ride height alone likely won't cure the issue.

That's what Tramont recommended. Based upon what I thought was on the car, it didn't seem that radical of a change.
Camber is at factory recommendations.

Sound advice. There's a shop here in Richmond (Lufteknic) that I've never tried but everyone swears by. TIme for a visit. I think the combination of fiddling (some camber here, fender rolling there) might just do the trick.

I thought the wheels I removed were what the car came with from Porsche. To ensure I wasn't a complete loon, I just checked the owner's manual. Yep, 18x10's on the back; no mention of an 18x9 option anywhere. My COA says the car came with the 18" Technology Design wheels. Perhaps the wheels were swapped at some point, for some unknown reason? Wish I knew because the mystery swap is giving me a headache for the second day in a row...

nile13

Like Bill and others, I would think that a mild fender roll should do the trick.

u7t2p7

I find that difficult to believe. Do you have that in writing or verbally. It's possible you heard et 55 but they meant et 65.

nile13

Et55 recommendation doesn't surprise me. HRE used to have overly aggressive 993 offsets for the rear wheels as well and probably still do.

RacerX1166

Tramont (Christine) only communicates in writing, so not much opportunity to hear them incorrectly.

Spyder_Man

986 Boxsters had both solid and hollow spoke OEM 18" twist wheel options in 7.5" front and 9" rear.

RacerX1166

Just looked, and sure enough, the fronts that came off the car were 7.5". At least I don't have any issue with the new fronts.

Wonder when my wheels got swapped?

RacerX1166

BTW, I'd like to offer a sincere thanks to all for the input. I began the day thinking I had a mild disaster on my hands but the wisdom of the group turned things around to where it looks to be a minor bump.

I'm darned happy with the new wheels again. I think those, combined with gmorat's bumperette inserts really transform the car. Gratuitous before and after photos -

P-daddy

Hay caramba! Lady in red with proper shoes

TouringTeg

You definitely have some options to make the rear wheels clear. Just depends which route you want to take.

• Change tire brand but use the same size. Identical size tires made by different companies have different section widths and will fit differently where the tread meets the sidewall.
  
• Add negative camber
  
• Roll the rear fenders
  
• Machine material off from the mounting pad of the wheel

timothymoffat

Car looks beautiful with either set.

I remember seeing your car advertised for sale a couple years back, glad you could keep it! I noted at the time your car had option code 408, or "technology" wheels (hollow spokes). As your car currently has 7.5"/9", then someone definitely swapped the factory equipped 8"/52ET and 10"/65ET wheels at some point. Unfortunate as they're not that easy to find, particularly the rears.

As noted, car looks grea with either wheel set installed. Hopefully you can find the ideal ride height/alignment setup to make them work without any rubbing.

Knight

I'm not sure if it's the angle of the pic, but do the rears appear overly aggressive and disproportion vs the fronts? Maybe after all is sorted with your rubbing issue you might need a small spacer for the front.

Dick in TN

A couple of points.
Just increase neg. camber only works if you don't care about tire wear.
The position of the wheels relative to the fenders from an appearance standpoint is a personal matter, for me you get the ricer look if you do tricks like rolling fenders and running a lot of neg. camber to allow pushing the wheels out as far as possible.
You can replace the outer barrels and it isn't that difficult. I had one damaged in shipment and replaced it, Tramont sent me the procedure.
Tramont is a first rate company and Christine is great to deal with, I hope you have made things right with them.