• Any fitment issues running Apex 19x11 ET26 wheels with 305s up front? Any rubbing or clearance issues at full lock?
• Anything specific to watch out for during the installation?

EricH said:

Finally got to ordering new Vorshlag camber plates and am planning to install them myself while retaining the OEM struts and springs on my base DH.

I'd like to run 19x11 wheel setup with 305/30R19 tires square. I spoke with Vorshlag on the phone, and they indicated I should be able to gain roughly an additional 2.5° of negative camber beyond the factory maximum adjustment which is around negative 1.3 degrees, and therefore get over -3° front camber with the plates. Based on that, it seems like the extra camber should provide enough clearance for the 19x11 front wheels and 305s without needing any additional modifications.

A few questions i'm trying to better understand before installing

• Any fitment issues running Apex 19x11 ET26 wheels with 305s up front? Any rubbing or clearance issues at full lock?
• Anything specific to watch out for during the installation?

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Junkyard Dog said:

EricH, my car came from Ford with 305 tires and 10.5" wheels. I am betting that you will have no issues.

@krisk went to 11" and 305 on his car, so I am tagging him here to respond to your question about whether you need -3° of camber just to fit those tires and wheels. I don't think that you need anywhere near that much just for clearance, but since my wheels are 10.5", and I have not tried 11" yet, even though I have 305 tires, I figured I had better let somebody respond who has actually done it in an S650.

(But I bet -3° camber and some sticky tires means higher speeds through the turns)

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Junkyard Dog said:

So . . . I was completely wrong, lol. But close! So 295 and 315.

Tire Rack has the 315 on closeout right now for $268, but they were produced in 2021.

So they rubbed on track. They are 26.6" tall and only 11.1" wide, in spite of being 315. And you reduced the size of your spacer by 3 mm. I assume that these are rubbing on the painted area of the fender, since you put masking tape on it. Although you say "inside," so maybe you mean the inboard side? What I mean is, is it rubbing on the outside of the tire up against the fender, not the inside of the tire?

So for my own planning purposes, I guess I need to know how much the Steeda Ultimate Handling Dual Rate Springs bring the tire up into the car further when compressed (since this happens only at the track) as compared to my stock Dark Horse handling package springs.

I was leaning toward a tire that is 305 but is 26.3" tall (so a tad bit shorter) and 11.3" wide (so a tiny bit wider).

Hrmph . . .


How did the staggered setup change the handling of your car? I recall that you were using a square set up - I guess it was 295 and not 305. How did the car handle with 315 square up until you realized it was rubbing?

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krisk said:

I've run a few different sizes on my S650. I am currently running the Apex 19x11 ET52 wheels square with a 28mm front spacer, but 295/30 in front and 315/30 in the rear. I wanted to run 315/30 tires square and tried a 25mm spacer up front. They fit without rubbing on the street with my front camber set to -3.5 and Steeda Ultimate Handling Dual Rate springs. On track was a different story. I used masking tape on the fender to monitor whether I was getting any rubbing and sure enough the tire rubs the inside of the front fender. Again, street is fine, track it rubs. I've not run a 305 up front, but I expect it would fit. My issue is I'm running the Continental ECF and it doesn't come in a 305/30/19.

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Stan Whitney said:

Do you have strut to tire clearance available to reduce the spacer size down to the 20-25mm range? You only need 3-5mm of strut to tire clearance, which could help bring the tire inboard and reduce fender and liner contact.

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Rocky400 said:

I moved to a square set up about a month ago before going to Road Atlanta. With 25mm spacers on the front and 20x11 all around. Running 305/30/20 on all corners. Atlanta has a few spots of noticeable compression so I definitely had slight rubbing on the front, but it cleared after a few sessions. I normally track in Florida where we don't have much elevation changes for this to happen. My camber up front is -2.4 degrees, but I have space to go further.

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Rocky400 said:

I moved to a square set up about a month ago before going to Road Atlanta. With 25mm spacers on the front and 20x11 all around. Running 305/30/20 on all corners. Atlanta has a few spots of noticeable compression so I definitely had slight rubbing on the front, but it cleared after a few sessions. I normally track in Florida where we don't have much elevation changes for this to happen. My camber up front is -2.4 degrees, but I have space to go further.

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Junkyard Dog said:

How did the tread look at -2.4°? I am guessing they were still worn toward the outside edge after Road Atlanta.

What camber plates are you using?

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Rocky400 said:

I swapped to Goodyear F1 Supercar 3 tires, and the wear wasn't bad. I took this pic Sunday morning of the front tires while doing a rotation. Saturday both myself and my friend were running the car in back to back sessions (transmission on his GT500 died, the week before at Sebring). So this was wear day 1 after about eight 15-20 minute sessions. The camber plates I have actually came off a GT500, I can't remember the brand but they gave more space for adjustment compared to the ones Ford sells.

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