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has anyone had any luck getting 315's on 10.5" wide rims into the front of a 94-98 mustang?? i know they are doing it in AIX, i was curious if anyone had done it and what it involved.
 

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A 10.5" wheel is not wide enough for a 315 tire. I'm not saying you can't squeeze one on there, it just won't work as well as a smaller tire that fits the wheel properly. A 12" wheel would be more apprpriate for a 315 tire. There just isn't enough room for a 12" wheel on a Mustang without seriously screwing up the scrub radius.
 

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Glenn said:
A 10.5" wheel is not wide enough for a 315 tire. I'm not saying you can't squeeze one on there, it just won't work as well as a smaller tire that fits the wheel properly. A 12" wheel would be more apprpriate for a 315 tire. There just isn't enough room for a 12" wheel on a Mustang without seriously screwing up the scrub radius.
Some 315's are a lot narrowwer than others.
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315 on a 10.5" fits better than a 275 on a 9"... so is a 9" too narrow for a 315 as well?
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DS used 275 710's pinched on an 8" wheel in FS. Should he have used a narrower tire?
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I agree that generally speaking the best wheel for a 315 tire is 12"... but in some cases, it's a different size.
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For the front of a 99+ mustang, a 315 tire needs fender work... and resulting offset needs to be less than 6" or the rubbing on the struts will come in to play... for a wider wheel with a 315, you may be able to get away with a little more... for Coilover clearance, you may need a little less.
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Scrub radius gets screwed up more and more as the width grows... and the added weight needs to be part of the consideration. For an SLA engineered for the wider wheels, and with mondo fenders, it would do well of course.
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My 2 cents...

Dave
 

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racer726 said:
Some 315's are a lot narrowwer than others.
Agreed.
315 on a 10.5" fits better than a 275 on a 9"... so is a 9" too narrow for a 315 as well?
Not sure what you are getting at, but yes a 315 is too wide for a 9" wheel.
DS used 275 710's pinched on an 8" wheel in FS. Should he have used a narrower tire?
Yes, he did, but it more than likely wasn't his best choice, however, Kumho was his sponsor and at the time a 275 was the only 17" choice offered in a V710 he could run. Being in FS he was limited to a 8" wheel.
I agree that generally speaking the best wheel for a 315 tire is 12"... but in some cases, it's a different size.
No argument here!
 

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I'm planning on testing this soon I hope. I have 4 - 315/35/17 V710's on the way and I'm shopping around for another pair of OE Wheel or Wheel Replica brand 95 Cobra R replicas in 17x10.5. The standard 17x10.5 with 27mm offset will not clear the strut without a 1/4" spacer. The tire still comes pretty close and this is with Victoracers. The Victoracer specs call for a 11" wheel and the V710's call for a 12".

I drove mine a little ways down the road with the Victos on front and my street 315 Sumitomos on the rear a while back. I threw it around pretty good with no rub but at lock the tire scrubs on the cross member at the rear pretty bad. I didn't get any fender scrubing. The car is lowered about 1 1/2" and the lower a-frames are set forward 5/16" by offset bushings. The turn in was awesome but with street tires on back it was terrible loose. I can adjust for that if it still that way with stickies on all 4 though.

Nothing definite yet but should know within a month or so and will post back if it does or doesn't work.

Here are a couple of pics of the 315/35/17 Victoracer on 10.5's on front of my 99.


 

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Glenn said:
The 710's may be a good bit wider than the Victos. You gonna bring them out at the SVTOA event at GIR?
Not coming to the SVTOA thing cause I have a local event that weekend. Going to try and make the State Championship event the following week at GIR. If I come up with another pair of wheels before then and it works I'll wear the 315's on front. Otherwise I'll run my 275's on front as usual. I run 315's on the rear anyway and they were needing replacing.

The listed sectional width of the V710 is 13" and the Victo is 12.8" so they are just under 1/4" wider overall. Might be enough to kill the deal. I'm gonna turn out some thicker spacers just in case but I don't want to go over 3/8" without longer studs which I don't intend to do.
 

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Grigg's "Old Blue" fox coupe is now wearing 315's on the front. But it has a SLA and lots of body work. I believe they are running RA1's.
 

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Thanks to goduke I have the extra wheels ordered so I'll try to take pics and post results on this subject about mid November.
 

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I'll keep digging this thread back up as I have results to post. Not sure how much difference the 94-98 fit will be compared to my 99 but somone may be interested.

I got the 315/35/17 V710's mounted today and put them on for a test drive. I made a new set of spacers that are slightly over 5/16" thick but I did test fit with the 1/4" spacer and still had clearence. I may use the 1/4" spacers because I was only engaging 12-14 threads on the studs so that is just under 3/4" of thread bearing the load with the 5/16" spacers. 3/8" spacers would be out of the question without longer studs. Obviously the tires aren't the ideal fit on 10 1/2" wheels but I wouldn't want to increase the track any wider. They stick out a bit in front but clear fine until you get to lock. We all know where the 275's hit so the 315's just hit the same area that much sooner.

Driving impressions are I didn't notice as much extra turn in response as I did with the victo's on front with street tires on rear but it still feels like it turns in better than with 275's. You can feel the extra weight in the steering but it's not that bad. I did not notice any change in acceleration rate but that is probably because I already run these monsters on the rear. I did some simulated slalom runs on a stretch of country highway near my house. I didn't have any cones to set up so I'm not sure of what distances I was able to achieve but I changed lanes abruptly on a couple of 40 mph runs then some at 50. I was mainly trying to get one end or the other to break loose and never did. I didn't have any place to safely simulate a turn around. I will get to run the setup next week but it will be on a surface that has loose gravel and sand so it won't be a great test of capability. The week after that I am going to try to do the FL Championship event in Gainesville so I'll probably wait till after that to update my impressions. Final analysis so far: I NEED A BETTER SEAT. LOL



 

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Good you keep bumping/updating H.Solo. I'm pretty much done doing autox this season, so I'm going to use the down time to accumulate the money needed to get an extr set of 17x11's(AR TT II's that I already have)and mount up the same tire you have.

From the looks of those pics, it seems that the 315 on the 10.5" isn't really THAT much of a bulge, nothing I'd be too concerned with anyways.

It may be some time before I get the wheels/tires due to not needing them for 4 or 5 months, but I'll add my impressions as well. Realistically I plan to have the 315's on all 4 corners, stiffer springs, and more camber for next seasons "assault".

I thought real hard about the addition of the KenneBell blower for my car, but have chosen to purchase a forged/high compression short block instead. I figure a big bore/stroker motor will offer me enough torque and hp, while at the same time be an upgraded piece for the 200shot I plan to pour on it. ;)

The wheels, tires, springs, camber plates will most likely be my budget(next season)so the motor will most likely wait untill this motor is "on it's way out".

Good luck man!!!! If 275's on all corners work good............more is better, right?! :)
 

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Han Solo said:
I'll keep digging this thread back up as I have results to post. Not sure how much difference the 94-98 fit will be compared to my 99 but somone may be interested.

I got the 315/35/17 V710's mounted today and put them on for a test drive. I made a new set of spacers that are slightly over 5/16" thick but I did test fit with the 1/4" spacer and still had clearence. I may use the 1/4" spacers because I was only engaging 12-14 threads on the studs so that is just under 3/4" of thread bearing the load with the 5/16" spacers. 3/8" spacers would be out of the question without longer studs. Obviously the tires aren't the ideal fit on 10 1/2" wheels but I wouldn't want to increase the track any wider. They stick out a bit in front but clear fine until you get to lock. We all know where the 275's hit so the 315's just hit the same area that much sooner.
Interesting. When I trial fit 10 1/2" rims (with 285 tires) to the front of my '97 with 1/4" spacers, the tire hit the sway bar at one side of full lock and the wheel hit the back side of the lca on the other. I had maybe 1/8" clearance between the wheel/tire assembly and the struy - not enough in my book.

So, I bought new hubs (75,000 miles, so why not?), wider spacers for the steering rack, longer studs and 1/2" spacers. Not on yet, but it looks like my 315s will stick out a bit more than yours. I also rolled the fenders, not sure that was needed, but I had a chance to borrow the tool so I went ahead.

I have heard '99+ front lcas have more clearance.

What is your clearance at the strut with 1/4" spacers?
 

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The 99>'s must have more clearance. Like stated before, I trial fitted AR TT II's(17x11's) with Nitto 315 drags on them to the front, they fit good with a small spacer added to clear the strut. It was still close to the strut, but only on full suspension droop. My current tires (275's on 9's for autox and 275's on 9.5's for street)hit on the bend of the front swaybar, and on the back rolled edge of the K-member. Nothing sharp, but it only contacts on FULL steering lock.
 

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I've got a set of cheapo 315/35 Sumitomos in the back on 10.5" wheels. The tire only bulges out a millimeter or two past the outside lip of the wheel. I wouldn't say that was excessive.

Haven't tried fitting them in front; I have 9" wheels in front.
 
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