Cadillac CTS Bolt Pattern (2003-2019)

The Cadillac CTS is a powerful mid-size sedan. It has luxurious options like 20-way power adjustable seats, performance options like Magnetic Ride Control suspension, and a 420 HP twin turbo 3.6L V6 that is faster than most V8 engines. Regardless of how high-performance or luxurious your car is, there is going to come a time where you need to know the Cadillac CTS bolt pattern.

If you have a Cadillac CTS that was made between 2003 and 2007, then it has a bolt pattern of 5×4.53 inches (5x115mm) and a 2.78 inches (70.5mm) center bore.

The thread size for this version is M15 x 1.5. If, however, your Cadillac CTS was produced between 2008 and 2019, it has a bolt pattern of 5×4.72 inches (5x120mm) and a thread size of M14 x 1.5. A Cadillac CTS from this range of years will have a center bore of 2.63 inches (66.9 mm) and use 5 lug nuts that need to be tightened to 110 ft-lbs

This alone, however, doesn’t give  you all the information you need. So, below we have taken the time to go over the Cadillac CTS bolt pattern in more detail for each generation. Also, we will provide links for the exact lug nuts to use on your Cadillac CTS.

We will also discuss the center bore and torque specs. After that, we will detail all the different tire and rim sizes that are available with each generation’s various engine configurations. 

Cadillac CTS Bolt Pattern

Cadillac CTS Bolt Pattern by Year

Year RangeBolt PatternCenter BoreLug NutsThread SizeTorque Specification
2003 – 20075×4.53 inches (5x115mm)2.78 inches(70.5mm) 5M12 x 1.5110 ft lbs
2008 – 20145×4.72 inches (5x120mm)2.63 inches(66.9mm) 5M14 x 1.5110 ft lbs
2014 – 20195×4.72 inches (5x120mm)2.63 inches(66.9mm)5M14 x 1.5110 ft lbs
Cadillac CTS Bolt Pattern

Wheel Fitment Specifications Per Generation

If you are going to mount a wheel on your car, then there is a whole lot more that you need to know than just the Cadillac CTS bolt pattern. So, we have gone over all of the various factors that need to be taken into consideration for each generation of the CTS. We will cover center bore diameter, wheel tightening torque, lug nut size, and the thread size of the bolts.

We will also cover each tire and rim option that came with each engine configuration of each Cadillac CTS generation. 

2003 – 2007

For this range of years, the Cadillac CTS can be equipped with either a 2.6L, 2.8L, 3.2, or 3.6L V6 engine. Regardless of which engine your CTS has, it will either use a tire size of 225/55R16 or 225/50R17, mounted onto either a 7Jx16 ET51 or 7.5Jx17 ET51 rim.

Engine SizeHorse PowerTire  SizesRim SizesBolt Pattern
2.6L V6181 HP225/55R16, 225/50R177Jx16 ET51,
7.5Jx17 ET51
5×4.53 inches (5x115mm)
2.8L V6215 HP225/55R16, 225/50R177Jx16 ET51,
7.5Jx17 ET51
5×4.53 inches (5x115mm)
3.2L V6223 HP225/55R16, 225/50R177Jx16 ET51,
7.5Jx17 ET51
5×4.53 inches (5x115mm)
3.6L V6258 HP225/55R16,  225/50R177Jx16 ET51,
7.5Jx17 ET51
5×4.53 inches (5x115mm)

2008 – 2014

If you’ve got a Cadillac CTS from this range of years and it is equipped with a 3.0L V6 engine, then it uses a tire size of 235/55R17 and a rim size of 8Jx17 ET48. If your CTS, on the other hand, has the larger 3.6L engine, then it has a tire size of 235/50R18 and a rim size of 8.5Jx18 ET48.

Engine SizeHorse PowerTire SizesRim SizesBolt Pattern
3.0L V6270 HP235/55R178Jx17 ET485×4.72 inches (5x120mm)
3.6L V6321 HP235/50R188.5Jx18 ET485×4.72 inches (5x120mm)

2014 – 2019

If you have one of the smaller 2.0L turbo CTS models, then it has a tire size of either 245/45R17 or 245/40R18, mounted onto either a 8.5Jx17 ET32 or 8.5Jx18 ET32 rim. For the larger 3.6L V6 engine, however, the CTS uses a tire size of either 245/45R17, 245/40R18, or 255/35R19. Rims sizes for this version of the CTS are 8.5Jx17 ET32, 8.5Jx18 ET32, or 8.5Jx19 ET34.

For the most powerful CTS that has the twin turbo 3.6L V6 engine, a tire size of 245/40ZR18 and a rim size of 8.5Jx18 ET32 is used.

Engine SizeHorse PowerTire SizesRim SizesBolt Pattern
2.0T I4268 HP245/45R17245/40R188.5Jx17 ET32, 8.5Jx18 ET325×4.72 inches (5x120mm)
3.6L V6335 HP245/45R17, 245/40R18, 255/35R198.5Jx17 ET32, 8.5Jx18 ET32, 8.5Jx19 ET345×4.72 inches (5x120mm)
3.6L V6420 HP245/40ZR188.5Jx18 ET325×4.72 inches (5x120mm)

Properly Tightening The Bolts

The Cadillac CTSs use 5 lug nuts that need to be tightened in a specific, crisscross pattern and to a specific torque level. This information, as always, can be found in the Cadillac CTS user manual, but it’s nice to have everything all in one place, so we put it here for you as well.

I cannot stress enough how important it is to make sure you get your lug nuts tightened properly. Remember, if you tighten them too much, it could damage components and make the wheel nearly impossible to remove next time. In contrast, if you don’t tighten the lug nuts enough, the wheel could fall off!

The first step is to tighten the lugs with a hand wrench. It’s important to not tighten the lug nuts down all the way just yet. If you do, it will be really hard to get your lug nuts all torqued down to their proper level. So, just tighten them down about half way at first to get them all on.

Then, you will need a proper torque wrench so you can tighten your Cadillac CTS lug nuts to the appropriate amount of pressure. For the Cadillac CTS, the lugs need to be tightened to  110 ft lbs.

After that, it’s important to perform a travel test on your Cadillac CTS lug nuts. A travel test is something that is easy to do and important for your safety. Tighten your lug nuts 110 ft lbs and then drive for around 30 miles or so.

Then, check the torque on each of your lug nuts again. If any of them are loose, don’t panic just yet. Re-tighten them and repeat the travel test. If, after that, any of your lug nuts are loose, then that means that the rim is warped and needs to be replaced. 

When To Rotate Cadillac CTS Tires

The tires on most cars generally last around 75,000 miles or 5 years, whichever comes first. And you may be wondering, ‘If my tires are 6 years old but have low miles on them, then how could they be bad?’ The unfortunate science is the fact that after a few years, tires will start to dry rot. When this happens, they need to be replaced, even if they don’t have many miles on them. 

It’s always a bummer when tires wear out, but the good news is if you rotate your Cadillac CTS tires at regular intervals, they are going to last way longer than they would if you didn’t. This is because the wheels in a car are not mounted perfectly straight and parallel to each other. That, of course, is the goal, and manufacturers build cars so that tires are as straight as possible, but it’s not perfect. 

When it comes to the Cadillac CTS, it’s best to rotate the tires every 7,500 miles or so. Rotating tires is not a hard thing to do. All you have to do is move the rear tires to the front and move the front tires to the rear. While you are doing so, also swap the left and right sides, and that’s all there is to it.

Conclusion

The Cadillac CTS is one of the most powerful and most luxurious mid-size sedans you can get. It’s hard to find a car on the road, especially another V6, that has the kind of power that the CTS has. 420 HP is a lot. No matter how powerful or luxurious your car is, however, you are eventually going to need to know the Cadillac CTS bolt pattern.

If you own a Cadillac CTS that was manufactured between 2003 and 2007, its going to use a bolt pattern of 5×4.53 inches (5x115mm) and a 2.78 inches (70.5mm) center bore. The CTS from this range of years uses a thread size of M15 x 1.5.

If, on the other hand, you have a Cadillac CTS that was made between 2008 and 2019, it will have a bolt pattern of 5×4.72 inches (5x120mm) and a thread size of M14 x 1.5. A Cadillac CTS from this era has a center bore of 2.63 inches (66.9 mm) and uses 5 lug nuts that need to be tightened to 110 ft lbs. 

We hope this article helped you learn more about the Cadillac CTS bolt pattern. Thanks for reading!

Leave a Comment