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-   -   Photo request — rear wheel and tire combo (https://rennlist.com/forums/991/1046102-photo-request-rear-wheel-and-tire-combo.html)

francisluu 02-02-2018 09:18 PM

Photo request — rear wheel and tire combo
 
I'm specifically on the hunt for photos of the following rim and tire sizes:

- 11.5" rim with 305/30 R20 tires
- 12" rim with 305/30 R20 tires

Please specify which brand and model tire please :) My goal is to understand whether or not/how the sidewalls bulge and how the rim guards/protectors influence how the tires fit visually on these wheel widths.

francisluu 02-02-2018 09:21 PM

Michelin Pilot Sport 4S on a 12” rim


https://cimg5.ibsrv.net/gimg/rennlis...474105653.jpeg

mikex25 02-02-2018 09:52 PM

https://cimg3.ibsrv.net/gimg/rennlis...af3df7d1ad.png
In my opinion a 12 inch width wheel is too narrow for a 305 to fit flush. If you take a look at the pic below the black C2S has 11.5 inch wheels with 305 sport cup 2 tires while the GT3 has stock 12 inch width on 305 Sport Cups. The C2S tires look much more flush compared to the GT3. In order for 12 inch width to fit flush you need a 315, but not many tires have these sizes in a 315/30/20. The GT3 RS has 12.5 inch wheels on 325, so the best fitment in my opinion is 305 for 11.5 inch wheel, 315 for 12 inch and 325 for 12.5.

https://cimg7.ibsrv.net/gimg/rennlis...c13277cd63.png
https://cimg8.ibsrv.net/gimg/rennlis...bd07b462a0.png

Papa Fittig 02-02-2018 11:19 PM

305 Bridgestone (on my 997 car)
https://s1.gifyu.com/images/IMGP4363800.jpg

francisluu 02-02-2018 11:49 PM

Yeah the 305 rear sections on an 11.5" rim seem more in the realm of what I'm looking for. I had that on my Turbo S and it looked better than the half inch wider rears on my current GTS. Maybe it's time to find a set of Turbo S rear centerlocks and powdercoat them black...

arter 02-02-2018 11:53 PM

325/30/20 ( cup2) on 11.5 inch wheel.
This fits fine and doesnt bow out
https://cimg3.ibsrv.net/gimg/rennlis...7e9fabfd72.jpg

mikex25 02-02-2018 11:54 PM


Originally Posted by francisluu (Post 14773709)
Yeah the 305 rear sections on an 11.5" rim seem more in the realm of what I'm looking for. I had that on my Turbo S and it looked better than the half inch wider rears on my current GTS. Maybe it's time to find a set of Turbo S rear centerlocks and powdercoat them black...

that is probably your best option or go 325, it will have a nice beefy look. But you have to get a 255/35/20 front to compensate for the rolling diameter. I think with a 325/30/20 your only .7 off which should be fine.

francisluu 02-03-2018 12:53 AM


Originally Posted by mikex25 (Post 14773716)


that is probably your best option or go 325, it will have a nice beefy look. But you have to get a 255/35/20 front to compensate for the rolling diameter. I think with a 325/30/20 your only .7 off which should be fine.

ive already upsized in the front to 255 so this all sounds good! 325s are hard to come by and all I see on tirerack are Toyo Proxes R888s — think 335s might be a bit too beefy?

mikex25 02-03-2018 01:10 AM


Originally Posted by francisluu (Post 14773807)


ive already upsized in the front to 255 so this all sounds good! 325s are hard to come by and all I see on tirerack are Toyo Proxes R888s — think 335s might be a bit too beefy?

a 325 would prob look very similar to the above 325 on a 11.5 wheel. Since 11.5 goes well with 305 and it’s jumping 2 sizes, similiar to 12 jumping 2 sizes do 335. Keep in mind your diameter difference will be .9 paired with a 255 and that is too large of a discrepancy.

francisluu 02-03-2018 05:00 AM

What will too large a front-to-rear discrepancy cause issues with? PSM? ABS?

mikex25 02-03-2018 11:35 AM


Originally Posted by francisluu (Post 14773976)
What will too large a front-to-rear discrepancy cause issues with? PSM? ABS?

throw off speedo and traction control

Johnny5Alive 02-03-2018 11:52 AM

20x11.5
305/30 20

michelin pilot sport 4S

https://cimg5.ibsrv.net/gimg/rennlis...110f5522f.jpeg

erko1905 02-03-2018 12:11 PM


Originally Posted by arter (Post 14773714)
325/30/20 ( cup2) on 11.5 inch wheel.
This fits fine and doesnt bow out
https://cimg3.ibsrv.net/gimg/rennlis...7e9fabfd72.jpg

Interesting. That looks pretty good. Do you get any rubbing w the 325s? I'm trying to sort out the Cup2 sizes for this upcoming season myself. What's the front tire size/rim diameter you're running? Is this an AWD car?

arter 02-03-2018 12:29 PM


Originally Posted by erko1905 (Post 14774414)
Interesting. That looks pretty good. Do you get any rubbing w the 325s? I'm trying to sort out the Cup2 sizes for this upcoming season myself. What's the front tire size/rim diameter you're running? Is this an AWD car?

This is a GTS RWD so I might have more room in back than a RWD S.
Running stock 8.5 x 20 in front with 245s

Papa Fittig 02-03-2018 04:45 PM

20" SD wheels in black and platinum. Pirelli on black and Michelin on platinum tires.
https://s1.gifyu.com/images/DSC037661200.jpg

https://s1.gifyu.com/images/DSC037721200.jpg

https://s1.gifyu.com/images/DSC037461200.jpg


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