K
krogers
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- Sep 10, 2021
- Thunderbird Year
- 2004
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You can use an SCT X4 Tuner to change the tire sizes etc. That's what I did on my Mustang,Your Speedometer and odometer will be off by 4% if you do this... It will show that you are going slower and traveling less miles than the actual. The wheel will be 1 inch taller and no wider. If you go to the 245/55/17 the tires will be 1/2 inch wider (add 1/4 inch to each side) and 1.1 inch taller. No interference issues with the suspension. You will notice less torque and acceleration but you will have a higher top speed. I would not expect any noticeable difference in the ride due to the tire size. Any differences I would attribute to the tire construction.
I put 255/45/17 on my car. This decreased the height of the wheel by 0.2 inches. Made the tires almost 1 inch wider but no taller.
There was no need for an adjustment because the tire diameter was only 0.5% smaller.@JohnS Did you adjust your speedometer after the size change? I ask because when using the stock size, my 04 speedometer was always 2 mph fast compared to speeds on the GPS app on my phone. I moved up to 235/55/17 and the indicated speed is still just a hair fast, which is OK by me, since it gives me a small safety factor. That 4% error might have made your speedo pretty accurate.
@D'Miles Whatever size you choose, take a hard look at the Michelin CrossClimate series, I put them on my wife's Infiniti and they are great. They were the top-rated all-season tire a year ago, and I caught the $150 rebate for 4 at Costco, so it brought the price in line with other name-brands that had worse performance. This rebate comes around often at the big Tire shops, but if you buy from Costco, be prepared to fight with them over the change in size. I finally had to get Michelin to send me an email saying that the "upsize" was approved. These will be my choice when my Continentals finally wear/age out.
Back to Krogers original question "Anyone know if 245/55/17 tires will have any clearance issues?"I have read that 245/50/17s fit a 2004 TBird and that 235/55/17s also fit. Anyone know if 245/55/17s (wider and taller) will have any clearance issues?
My 2003 has 235/55/17 and no problems. I need new tires and look forward to what people say here.I have seen on other post where people have upgraded their tire size from 235/50/17 to 235/55/17 very successively.
I am planning to do a tire upgrade and was wondering if anyone had gone to 245/55/17 and if there are any problems doing so like wheel well rub?
I am thinking that the "wheel well fill" would probably look a lot better with these bigger tires.
Also is the ride comfort and performance more noticeable running with 245/55/17 ?
Thanks
A pic of the side view and rear view would be awesome !I have 245/50/17 on mine and love the look, wider and lower. I had the 235/55/17 and always thought they appeared to tall and narrow, I will see if I can find a good picture and post it.
What brand, model, size did you have before? Do you notice a noise difference?Thanks for this thread - based on this information I went and bought new tires- 235/55/17 from Discount Tire and boy what an improvement - I tell you what this car drives like a dream— the tires are made by Sentury and they were $91 each.