These are the new rims I am getting. What is the best size tire to go with these rims... They are 20" and 10 in the back and 9 in the front. I will be using the Ford suspension package which says it drops the car 1.5" With 20's and the right size tire will there be plenty of clearance and no rubbing issues?
The stock tire diameter is about 27.1-27.2 inches. 275-35/20's on back will have a diameter of about 27.6 inches - just a little bigger. 255-35/20's up front will be about same as the stock diameter. Those are the sizes I'd go with if I rolled on 20's.
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UofASouthpaw
'06 Vista Blue GT - 18" Chrome Bullitts (255/45's front, 285/40's rear). More mods down the road.
Assuming you've got a GT, then there shouldn't be any problem. I don't know if there might be obstructions on the V6 suspension though. You might need steering stops, and at $40 for a pair it's good insurance to just pony up for them.
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UofASouthpaw
'06 Vista Blue GT - 18" Chrome Bullitts (255/45's front, 285/40's rear). More mods down the road.
a kajillion people are running 20's with big rubber and have s197's more lowered then that with no rubbing issues dude.... like nike says... just do it.
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Look for mod's in profile... too many.
"As I walk through the valley of rice, I shall fear no VTEC, for torque art though with me. Thy rod and thy piston, they comfort me"
Don’t listen to ANYONE that speaks in generalities about what tires fit what rims. Tire manufacturers design their tires for a specific width rim for optimum sidewall performance (the sidewall has a lot more to do with how your tires wok than you can imagine). Tires mounted on a rim that is on the narrow side will wear the middle out of the tread faster and will loose lateral traction (slip angle) because you have already used a portion of the sidewalls flex just getting it on the rim. When you hit a bump there will not be enough flex to absorb the bump and the tire will loose traction. If you put a tire on a rim on the wide size it will ride very harsh because of the sidewall being pulled “out”, it will have less slip angle grip and worst of all if the tire rolls just a bit on the rim you could contact the road with the lip of your rim and scuff the crap out it.
Not all tire manufactures suggest the same width rim. For example Tire X in a 275 may call for a 9” rim and tire Y in a 275 may call for a 10” rim.
There will be a suggested range of tire/rim size combinations. For example Brand X tire in a 275 may say it works best on a 9.5” rim but will work with a 8.5-10.5” rim. If you can, and 99% of the time you will be able too, buy tires that hit the exact rim width suggested by the manufacturer.
Pic the tire you want to run, or narrow it down to a few you like and look the specs up to see what rim width their tires recommend. Tire Rack’s site has a great tech section for each tire they sell. Just get on www.tirerack.com at the top tool bar go to Products>tires>brand>the manufacturer you want to look at>the tire model you are interested in>specs.
Discount Tire has specs too but it’s a PITA. You can also check the manufacturers home page.
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I have 20's and I personaly think that 255/35/20 in the front, and 295/35/20
Yes I said 295 and yes they do fit the back.
If you are running 20 inch rims tire softness is a major factor for ride comfort, and drivability make sure you choose a softer tire then Street/Drag radials or you will regret your purchase.
You will notice alot of people with 20inch rims have this spec going on.
Front:255/35/20
Rear:285/30/20
Notice something? The rear tire has a smaller profile then the front. Trust me it looks retarded. Make sure you get the same "series" rear tire, and you will love your 20's and get complements
I forgot, I think the reason why lots of people are running the 285/30/20 is so that they don't have to re-calibrate there speedo. By compinsating for weight by decreasing side wall height, and width to achieve stock revelations. You know stock overall tire size.
It's stupid get the right tires on there, kudos to many Mustang vendors that mount and balance your wheels with tires. But lets be honest if you only have a choice of 2 tire brands chances are there not going to be ideally what your looking for. Logically I'd say if you bought 20inch wheels your looking to fill the wheel openings.
Another fact to my point. Search the forums for other 20" wheel owners with the Eibach prokit and a 30 series rear tire, and then one with a 35 rear and tell me I'm wrong.
I'm one of those people who does things right in life, rather then doing it twice. There's alot of people who like doing things twice.
Example not shimming your rear end for Diff gears and hoping everything lines up.
im seconding 2digits on the sidewall thing.... im running 20's ... here is my setup: front: 20x8.5 with a 255/35 and rear: 20x10 with a 295/30.
i have no issues with anything and im lowered 1.5 inches....
but yah like i was saying on the thing about 2digits mentioned... i was worried about rubbing when i got my rims and took what i was told.... now that there is plenty of room for a bigger sidewall front and back.... my next set of tires will have bigger sidewalls even if i give up some performance for the sake of ride comfort.... you could easily fit a 40 sidewall in the front on 20" rims with no rubbing issues IMO with you car being lowered 1.5".
My next set of tires will be 255/40 front and 295/40 rear ... that should help with some of the ride quality.
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Look for mod's in profile... too many.
"As I walk through the valley of rice, I shall fear no VTEC, for torque art though with me. Thy rod and thy piston, they comfort me"
I've never seen 295/35/20. Maybe I should have given that some consideration before switching to 18's, but I love the new look of my car.
it does exist bigwilly.... i obsessively searched around a little while back and i did come across a 295/35 ... I just dont remember what brand and model...
Although I found pictures of a mustang lowered I think 1.75" with 255/40 and 295/40 on 20's fit just fine.... no rubbing issues the guy claims..... i saved them to my hard drive... just gotta dish em out.
You got new rims? i knew you were selling your 20's? lets see some new pics of the ride!
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Look for mod's in profile... too many.
"As I walk through the valley of rice, I shall fear no VTEC, for torque art though with me. Thy rod and thy piston, they comfort me"
Just so people can avoid putting their foot in their mouth, here is the low-down on tire sizes:
The first number is the width in millimeters.
The second number is the height of the sidewall, in a percentage of the width.
The third is of course, the wheel size in inches.
HENCE:
A 255/35/20 has a sidewall of 3.513 inches, which gives your tire a radius of 27.26 inches. (20in+3.513in+3.513in)
A 295/30/20 has a sidewall of 3.485 inches, which gives your tire a 26.97 inch radius.
Now, standing 2 feet from the vehicle, you would be hard pressed to see the 1/4 inch difference in side wall between the two tires, so in effect they would look like identical sized tires, only the rears would be wider.
On the other hand, a 275/35 would have a sidewall of 3.79 inches, making the tire almost 2/3 inch taller in the back, and the more appropriate size tire for a 10 inch rim, a 285 with a 35% sidewall would be 3.93 inches, giving it almost 9/10ths of an inch taller stature than the front tire.. You are going to notice an inch difference from front to back.
So while you want to make sure the tire is compatible with the wheel width, you also need to decide if you want the "mag wheel" look in the back with a big fat sidewall, or if you want the front to match the back. If you do go with a 35 in the back, you will have to reprogram your speedo or it will be off 3 or 4 mph at 60.
I have seen people with both configurations, and even lowered, neither seems to have a problem with rubbing in the back, and I don't ever recall anyone complaining of rubbing in the front, even with a 2" drop.
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2006 GT Premium Vert, 5 spd, Tungsten Grey Show: Painted gloss black stripes, Street Scene Gen 1 body kit, side and hood scoops, CDC light bar, sequential tails, purple underglow, 8" shorty antenna, redline hood struts, Steeda Ultralights, 20" Chrome Killers, S.O.S. pillar & 3 gauges. Go: J&M LCA's & Adj. UCA, J&M Adj. Panhard, CHE LCA reloc brackets & torque limiters, 3.73 gears, Kenne Bell Stage 1 2.6l supercharger.
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it does exist bigwilly.... i obsessively searched around a little while back and i did come across a 295/35 ... I just dont remember what brand and model...
Although I found pictures of a mustang lowered I think 1.75" with 255/40 and 295/40 on 20's fit just fine.... no rubbing issues the guy claims..... i saved them to my hard drive... just gotta dish em out.
You got new rims? i knew you were selling your 20's? lets see some new pics of the ride!
I've got to wait awhile before the pics come out. We are having some setbacks with the paint and other new mods. I want it to be perfect for the unveiling.
New rims and a question 
