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-   -   Using 275/45/20 instead of 285/45/20 (https://www.audiworld.com/forums/q7-mkii-discussion-211/using-275-45-20-instead-285-45-20-a-2966223/)

Pasquale Colella 01-27-2019 06:28 AM

Using 275/45/20 instead of 285/45/20
 
17k miles and they are already shot. The smaller 275 seems to offer more options at a lower price and higher thread.

Anyone using 275 instead of 285?

TheFatArmadillo 01-27-2019 07:14 AM

Running those for our winter tire size. No issues.

Audirings4 01-27-2019 07:34 AM

I’d never go with a smaller diameter tire. Less between you and the road and chances are it won’t look good. Id go larger if they fit.

https://m.tirerack.com/tires/tires.j...=945WR0DWS06XL

htd4555 01-27-2019 07:36 AM

I was contemplating of the same thing in the 21" size. There is a variety of all season tires to choose from with similar load rating, longer tread wear, and much lower cost. The downside is the 1-2% error in speedometer reading.

NABS4 01-27-2019 07:45 AM


Originally Posted by Pasquale Colella (Post 25267661)
17k miles and they are already shot. The smaller 275 seems to offer more options at a lower price and higher thread.

Anyone using 275 instead of 285?

The 275s are only 1.18% smaller in circumference than the 285s. Anything within 3% is normally considered acceptable, and I prefer within 2%. No issue at all.

V13T 01-27-2019 09:47 AM


Originally Posted by MonzaAvant (Post 25267685)
I’d never go with a smaller diameter tire. Less between you and the road and chances are it won’t look good. Id go larger if they fit.

https://m.tirerack.com/tires/tires.j...=945WR0DWS06XL

would there be any speedo errors or issues with going with a wider tire?

I have never bought rims or different size tires before for my rides so I’m not familiar with what is a acceptable tire spec.

TheFatArmadillo 01-27-2019 10:04 AM


Originally Posted by V13T (Post 25267741)


would there be any speedo errors or issues with going with a wider tire?

I have never bought rims or different size tires before for my rides so I’m not familiar with what is a acceptable tire spec.

At 65 mph, the speedo will show 64.23 mph. There I’ll be no error on the speedo, or any other errors from the car.

Corgiman 01-27-2019 10:44 AM


Originally Posted by TheFatArmadillo (Post 25267754)


At 65 mph, the speedo will show 64.23 mph. There I’ll be no error on the speedo, or any other errors from the car.

Audi speedometers tend to show faster than the car is going so maybe that’s a plus.

Force-1 01-27-2019 11:26 AM

Tire size calculator

V13T 01-27-2019 08:14 PM

Can I use a 275 or 295 tire on the stock 285/45/20 rim?

htd4555 01-28-2019 05:36 AM

The OEM 20" stock rims are 9" wide so 275 should fit without any problem. The 295 might not fit the OEM rims as they are not wide enough. Use the tire size calculator posted above to see what tire size, wheel diameter, and rim range might fit.

Pasquale Colella 01-28-2019 06:24 AM


Originally Posted by MonzaAvant (Post 25267685)
I’d never go with a smaller diameter tire. Less between you and the road and chances are it won’t look good. Id go larger if they fit.

https://m.tirerack.com/tires/tires.j...=945WR0DWS06XL


The problem is they are already pushing it by putting a 285 on this rim.

Pasquale Colella 01-28-2019 06:41 AM

Just bought 275/45/20 Pirelli Scorpian Verde AS Plus for $230 bucks each vs the $350 for the 285's. These also have a higher thread so they should last longer. Will replace the rears with the same size once they go.

mackerman22 01-28-2019 06:49 AM

With the 295's I would worry about rubbing the tire on the wheel well during lock-to-lock turns. The 275's are no issue.

NABS4 01-28-2019 09:13 AM


Originally Posted by Pasquale Colella (Post 25268081)
Just bought 275/45/20 Pirelli Scorpian Verde AS Plus for $230 bucks each vs the $350 for the 285's. These also have a higher thread so they should last longer. Will replace the rears with the same size once they go.

I think you mean "tread". Thread is for sheets and towels...:)

Audirings4 01-28-2019 12:56 PM


Originally Posted by Pasquale Colella (Post 25268063)
The problem is they are already pushing it by putting a 285 on this rim.

295 is not pushing it on a 9” wheel. You’ll be fine.
This size combo is very commonly used with the Grand Cherokee.


https://cimg9.ibsrv.net/gimg/www.aud...ccf9d3f6a0.jpg

uberwgn 01-28-2019 01:02 PM

Pasquale, will this new, smaller tire still meet the load carrying capacity required for your vehicle?

Pasquale Colella 01-28-2019 01:39 PM

285/45R20
112H
XL
Audi AOExtended Run Flat

Eco:
EcoImpact
520 A A2,469 lbs50 psi10/32"43 lbs9-10.5"9.5"11.2"9.4"30.1"DE 275/45R20
110V
XL

Eco:
EcoImpact

740 A A2,337 lbs50 psi11/32"35 lbs8.5-10.5"9"10.7"9.1"29.8"

Pasquale Colella 01-28-2019 01:40 PM

Max load per tire is 130lbs less but I don't think any of us are loading our Q7 to those extreme weights.


285/45/20 is 2469
275/45/20 is 2337
255/55R19 is 2403

mhoran89 03-28-2019 10:03 AM

Has anyone looked at going with a 265/50/20 on the OEM 20x9" wheel? Lots of options and they are even cheaper cost wise than a 275/45/20.
Seems like most 265/50/20 tires have a tread width close to 9 inches and fit a wheel width of 7.5" - 9.5".
Overall rolling diameter is 30.5" on the 295/50/20 versus the 30.1" diameter on the 285/45/20 (OEM Goodyear runflats). I would rather go larger than smaller, but that's just me...

It will fit the wheels and the profile won't look funny, but will you compromise a bunch of handling by going with a 265 vs a 285 tire?

Audi707 03-28-2019 01:56 PM

I’m on pirelli verde 285/50/20

looks lowered but off-road aggressive...backwood baller cause my road is mile long off road

CountLaszlo 03-28-2019 05:11 PM

Conti DWS tires have lasted the longest on the heaviest of SUVs. 15,000 miles is about the average on Land Robers to the GL. The Q7 is a beast. Nothing to do with the brand. More about weight. Tire size might help. But why go with less patch. Unless you need snow tires. All seasons and summer I would just try another brand but as said the Conti DWS is an awesome tire of not best out there beside pilot sport.

mhoran89 03-29-2019 06:22 AM

Here are the specs of the oem 285/45/20 goodyear runflats and below is the 265/50/20 bfgoodrich I am considering...
https://cimg0.ibsrv.net/gimg/www.aud...dc89d867e1.jpg
https://cimg1.ibsrv.net/gimg/www.aud...948d642ed3.jpg

Seems like you have a lot of options in 265/50/20 and you can find things that are load rated similarly.
Only thing is I am hesitant to go with a tire that has a traction rating of B vs A. The test (performed in wet conditions) focuses on tread compound over pattern and I'm sure the car would stop sooner on a A (or AA) traction rated tire...

mhoran89 04-01-2019 09:39 AM

Seems like range rover and jeep grand cherokee uses 265/50/20 and it is somewhat common. Not as common as the 275/45/20 size though.

mhoran89 04-25-2019 09:43 AM

No input on trying a 265/50/20? Crickets...

NABS4 04-26-2019 07:52 AM


Originally Posted by mhoran89 (Post 25308005)
No input on trying a 265/50/20? Crickets...

I don't see the benefit in going with that size over the 275/45. Most of the 265 offerings seem to be "truck" tires, whereas the 275s seem to be more performance oriented. And most people prefer a slightly wider tire. Either size will work fine.

tipster1947 04-27-2019 04:02 AM

Has anyone tried any "All-weather", (NOT "All-season" or Winter only) tires? There are none on the market, at least in the US, in OEM size (285/45-20 on my car).

NABS4 04-27-2019 07:20 AM

Nokian WRG4 SUV in 275/45.

tipster1947 04-27-2019 12:52 PM


Originally Posted by NABS4 (Post 25308841)
Nokian WRG4 SUV in 275/45.

Thanks! Interesting.Tread pattern makes me anxious about noise on dry roads. Tire rack and other mail order places don'rt seem to sell Nokians and neither does anyone else around SE PA, except for some very little garages per Nokian web-site. that I've found. there is a dealer out in Frisco, CO. I'll have to talk to him next winter.

When I asked dealer about All-weather tires, they looked dumbfounded.

Do you agree that the load rating is irrelevant?

Force-1 04-27-2019 03:54 PM

https://cimg6.ibsrv.net/gimg/www.aud...18522de5c6.gif https://cimg9.ibsrv.net/gimg/www.aud...9f965bce8b.gif https://cimg0.ibsrv.net/gimg/www.aud...f31629a589.gif

https://cimg1.ibsrv.net/gimg/www.aud...aad376ac4a.jpg

mhoran89 04-27-2019 04:29 PM


Originally Posted by tipster1947 (Post 25308985)
Thanks! Interesting.Tread pattern makes me anxious about noise on dry roads. Tire rack and other mail order places don'rt seem to sell Nokians and neither does anyone else around SE PA, except for some very little garages per Nokian web-site. that I've found. there is a dealer out in Frisco, CO. I'll have to talk to him next winter.

When I asked dealer about All-weather tires, they looked dumbfounded.

Do you agree that the load rating is irrelevant?

try tiresbyweb.com they ship Nokian. They are also on eBay.


thats a 21” tire not a 20”

Force-1 04-27-2019 04:56 PM


Originally Posted by mhoran89 (Post 25309076)
thats a 21” tire not a 20”

https://cimg7.ibsrv.net/gimg/www.aud...ad3b1d0116.jpg

PeteDin206 04-28-2019 07:23 AM

Wait what? You are running different sizes of tires on your front and rears?


Originally Posted by Pasquale Colella (Post 25268081)
Just bought 275/45/20 Pirelli Scorpian Verde AS Plus for $230 bucks each vs the $350 for the 285's. These also have a higher thread so they should last longer. Will replace the rears with the same size once they go.


Corgiman 04-28-2019 10:02 AM

Just my 2¢ but I’m gonna assume the Audi engineers put a lot of thought into tire profiles and are aware of alternative options.

Mesquite77 04-28-2019 01:04 PM


Originally Posted by Corgiman (Post 25309344)
Just my 2¢ but I’m gonna assume the Audi engineers put a lot of thought into tire profiles and are aware of alternative options.

Very likely, then a marketing guy comes along and says "they don't look right", and it gets changed, just like that, MO of corporate world, lol.

indiandevil2 04-29-2019 10:30 AM


Originally Posted by Pasquale Colella (Post 25268081)
Just bought 275/45/20 Pirelli Scorpian Verde AS Plus for $230 bucks each vs the $350 for the 285's. These also have a higher thread so they should last longer. Will replace the rears with the same size once they go.

can i do the same for the 21" mine stock are 285/40/21 > 275/40/21 ( if the come in this size that is)?
i always get confused about this. at 24k the original contisport are dead.

indiandevil2 04-29-2019 10:33 AM

checked. most of them come with 107Y rating. vs 109 Y in original. different weight category per tire ? does it made a huge difference

mhoran89 04-29-2019 10:35 AM


Originally Posted by indiandevil2 (Post 25309787)
can i do the same for the 21" mine stock are 285/40/21 > 275/40/21 ( if the come in this size that is)?
i always get confused about this. at 24k the original contisport are dead.

you will go down in width, but other than that there is not much difference...

https://www.tacomaworld.com/data/tir...275x40xR21.png

mhoran89 04-29-2019 10:42 AM


Originally Posted by indiandevil2 (Post 25309790)
checked. most of them come with 107Y rating. vs 109 Y in original. different weight category per tire.

109 load rating is 2271 lbs per tire
107 load rating is 2149 lbs per tire

in real life this is irrevelant, unless you are planning on towing crazy weight with the car loaded to the max.
a 122 lb difference is not going to matter. either way the 4 tires are rated to a minimum of 8500+ pounds, which is aggressive.
with a 5k lb SUV, plus 5 passengers (1250 lbs) and cargo (500 lbs), plus a 7000 lb trailer (tongue weight of approx 700 lbs) you are looking at ~7500 lbs GVW.
I highly doubt you are going to exceed the load rating of 107 rated tires ever... just my 2 cents.

indiandevil2 04-29-2019 01:00 PM


Originally Posted by mhoran89 (Post 25309801)
109 load rating is 2271 lbs per tire
107 load rating is 2149 lbs per tire

in real life this is irrevelant, unless you are planning on towing crazy weight with the car loaded to the max.
a 122 lb difference is not going to matter. either way the 4 tires are rated to a minimum of 8500+ pounds, which is aggressive.
with a 5k lb SUV, plus 5 passengers (1250 lbs) and cargo (500 lbs), plus a 7000 lb trailer (tongue weight of approx 700 lbs) you are looking at ~7500 lbs GVW.
I highly doubt you are going to exceed the load rating of 107 rated tires ever... just my 2 cents.

I think that's true. Not a lot of difference


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