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Old 01-01-2016, 08:28 PM   #15
Norm Peterson
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The load vs inflation pressure line for any given XL tire is identical to the load vs inflation line for 4 load index numbers smaller in the SL table up to the max SL pressure rating of 36 psi. Then the XL tire load ratings continue to increase up to the XL max pressure rating of 42 psi.

I have a copy of the official load vs inflation tables, and a little spreadsheet lookup app I put together for determining inflation pressure adjustments when either load index or SL/XL load range changes are made.

Below is the comparison for 99SL and 103XL. The applicable cells are shaded (not including the single yellow cell, that's an SL load @ 32 psi to be matched by the second tire's load index and load range).


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Old 01-08-2016, 10:01 PM   #16
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My Apex PC-7 19x11" for the rear are here. Looks freaking great in person. 24.7lbs.
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Old 01-09-2016, 03:42 AM   #17
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Very nice!!
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Old 01-09-2016, 06:21 AM   #18
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Very nice!!
They feel strong and very solid compared to say the TSW Nurburgrings and Forgestar CS5Vs I had. I may have to use spacers with my longer Pfadt studs up front to run these square. Also from what I worked out, these rims at 19x11 @ +25 would need a 3mm or 5mm spacer to put them at a similar distance from my strut on my car. 10mm would make them comparable to a +15 offset. I still don't trust spacers though, so I also have more camber on tap so today when it gets a little warmer or tomorrow I will see if it works with more camber adjustment.

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Old 01-09-2016, 07:11 AM   #19
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There's also a Rays Volk Racing ZE40 19x11 +25 wheel that is similar in fitment to this Apex wheel as well. The Rays option is fully forged, around $1000 and also has the groves to grip the tires from rotating when braking or accelerating like the Z28 rims. I should sell my Apex wheels and go for the Volk option instead. Only thing is Volk racing has like a 3 month + waiting time from order date to delivery . They also have a 19x10.5" at +22 offset as well. These wheels are extremely light, like GA1R light.
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Old 01-09-2016, 04:33 PM   #20
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I love the ZE40s almost picked up a set for my GTR but went with some Advans instead. Would love to see some on a Camaro
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Old 01-11-2016, 03:42 PM   #21
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Re-71r is a great tire switching to it from the re-11 I used last year. I have herd that they will come out with a 305-30-19 later in the year
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Old 01-11-2016, 03:46 PM   #22
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Re-71r is a great tire switching to it from the re-11 I used last year. I have herd that they will come out with a 305-30-19 later in the year
Yes, I believe they posted August '16 for the release date for that size.

What about the longevity and consistency of RE-71Rs? In the Miata forums, those who tried this tire are impressed by the lap times and the traction, but they say it wears out very fast, too, and is not as consistent as other reliable tire options (like NT01).
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Old 01-12-2016, 02:31 PM   #23
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Yeah that is its down fall is that it wears fast
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Old 01-13-2016, 07:44 PM   #24
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Yeah that is its down fall is that it wears fast
How fast do they wear. I am honestly thinking of sending these back to and get NT01s instead.
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Old 01-13-2016, 09:07 PM   #25
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Just saw this on another forum. http://www.prima-racing.com/bridgest...king-part-one/http://www.prima-racing.com/bridgest...two/#more-2072
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Old 01-31-2016, 01:39 PM   #26
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My Apex PC-7 19x11" for the rear are here. Looks freaking great in person. 24.7lbs.
Well I Fired the RE71rs,(returned to TireRack for refund) and hired a set of Nitto NT01s 305-30-19 for all 4 corners. The Nittos are stronger for sure very stiff shoulders total opposite to the Hankook RS3 I had which has very soft shoulders. I can't wait to run these NT-01s on 19x11s all round.
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Old 01-31-2016, 05:02 PM   #27
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There's also a Rays Volk Racing ZE40 19x11 +25 wheel that is similar in fitment to this Apex wheel as well. The Rays option is fully forged, around $1000 and also has the groves to grip the tires from rotating when braking or accelerating like the Z28 rims. I should sell my Apex wheels and go for the Volk option instead. Only thing is Volk racing has like a 3 month + waiting time from order date to delivery . They also have a 19x10.5" at +22 offset as well. These wheels are extremely light, like GA1R light.
Ok so I just test fitted the 19x11" +25 offset Apex rims on the front and happy to say they fit without spacers and cleared the Bilstein front strut with 1 inch clearance approx. But I will have to use the 8" coilover spring to clear the 305 tire. They will fit the stock front strut even better. On the rear there is no clearance issues of course. They do stick out somewhat like Z28 rims at back though. Nice so for track use we can go ahead and order these or the lighter, stronger, better Volks. If anyone wants to but my 2 Apex rims so I can get the VOLKS let me know .
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Old 06-03-2016, 01:11 AM   #28
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Ok so I just test fitted the 19x11" +25 offset Apex rims on the front and happy to say they fit without spacers and cleared the Bilstein front strut with 1 inch clearance approx. But I will have to use the 8" coilover spring to clear the 305 tire. They will fit the stock front strut even better. On the rear there is no clearance issues of course. They do stick out somewhat like Z28 rims at back though. Nice so for track use we can go ahead and order these or the lighter, stronger, better Volks. If anyone wants to but my 2 Apex rims so I can get the VOLKS let me know .
Will this clear stock 2012 SS suspension? On cut springs with a lowered ride height of -2 inches... Will install with new OEM replacements!
Just picked up a full set in Anthracite. Had them shipped earlier today. Cheers!
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